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****Official Wheel & Tire Fitment Guide for SC300/SC400****

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Old 04-12-05, 03:25 PM   #1
newyorksc
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Default ****Official Wheel & Tire Fitment Guide for SC300/SC400****

***Official Wheel & Tire Fitment Guide for SC300/SC400***

If you are looking for a new set of wheels for your sc300 or sc400, and you have any questions like “will these fit”, please read this thread. It seems as if everyday, or every other day, there are new threads being posted with these questions. So please take the time to educate yourself with wheel and tire fitment. A lot of topics will be discussed that all play a role in wheel fitment… bolt patterns, offsets, camber, fender modifications, widths, diameters, disk setup, and tire sizes.

Bolt pattern: 5x114.3 – When searching for your new set of wheels, make sure it has this bolt pattern. Most Lexus (Toyota), Infiniti (Nissan), and Acura (Honda) and other Japanese cars use this bolt pattern. The only way you can mount wheels that were made for a car with a different bolt pattern, i.e. BMW or VW, is using adapters. However, 5x114.3 is very popular and you shouldn’t have trouble finding a set of wheels you like with this bolt pattern.

Offsets: The stock offset is +50mm. When stock wheels are mounted to our cars, they appear to be “sunken” (tucked into the fender). Too low of an offset will make a wheel stick out, passed the fender.Many people choose to go with a lower offset, or run spacers, so the wheels will not appear to be sunken, and come to the edge of the fender, for a more aggressive/clean look.

you can go as low as +38 on a 10” wide wheel in the rear without any fender modifications and as low as +22 on a 10” wide wheel with your fenders rolled. your tire size plays a big role here.

Gamer
front: rim size 18x9; offset +44; tire size 245/45/18; no fender modifications
rear: rim size 18x10; offset +49; tire size 265/35/18; no fender modifications

MongolKhan
front: rim size 18x9; offset +24; tire size 255/35/18; fenders rolled
rear: rim size 18x10; offset +22; tire size 265/35/18; fenders rolled

Jeremyp111
front: rim size 18x8; offset +38; tire size 245/40/18; no fender modifications
rear: rim size 18x9; offset +38; tire size 265/35/18; no fender modifications

Dx3
front: rim size 19x8; offset +45; tire size ???; no fender modifications
rear: rim size 19x8; offset +45; tire size???: no fender modifications

mrshabo
front: rim size 19x8.5; offset +34; tire size 245/35/19; needed fenders rolled
rear: rim size 19x9.5; offset +36; tire size 275/25/19; needed fenders rolled

Depending on what you are doing with your car, your offset preferences will change.

There was some argument on how lower offsets will affect handling, please read further here:

Will lower offsets affect handling?

Also consider, when going with wider wheels, and you have a high offset, you may interfere with suspension components, like the strut. You can go with a 10" wide rim and stock offset and it will not interfere. If you went with a 12" wide rim and stock offset, it will not clear suspension components. The main thing is to find a perfect balance.

When shopping for new wheels, take into consider disk fitment. If you have upgraded or plan on upgrading your brakes, make sure you have high disk fitment.. for the front at least. With high disk fitment, the face of the wheel will curve move to make clearance for the bigger caliper. With low disk fitment, the face of the wheel will appear “flatter”.

If you buy a new set of wheels, it is almost a given that you have your car lowered or you are going to. You should be fine with anything up to 19” with the right wheel dimensions. With 20” rims on an SC and a 1.5” drop you should be good. Over a 1.5” drop you will need to do inner fender modifications. This may include removing the fender lining completely and relocating the wiring harness… depending on how extreme you want to go with your drop.

How to make wheels fit: You can make wheels fit your car in many ways.. You can roll your fenders, run negative camber, stretch tires, pull your fenders, or do a combination, or do all.

There are many techniques for rolling fenders. If you plan on rolling a lot of fenders, you might want to invest in an “Eastwood Fender Roller”. Search for it on any search engine and it should appear.

Fender Lip

Can you see the fender lip? It’s a black strip of plastic that lines the fender. As you can see, with the current wheel mounted, the tire will rub the fender lip when driving over bumps and going over dips. You can either cut this black strip, sand it down, or remove it completely. Under the black strip of plastic there is actual steel that also pokes into the space as well. Some cars do not have the black strip but the steel rather. Either way, when people roll their fenders, they are basically maximizing the space inside the wheel well for more clearance, even if it means diminishing strength of the quarter-panel.

Negative Camber
Negative Camber 2

Running negative camber is not suggested unless you are really going extreme. With negative camber, you will have increased tire wear, and some enthusiasts deem it unsafe if you have too much. Most people who run an extreme amount as shown above usually have air suspension and do not actually drive like that, however there are some that do. Some negative camber, with the correct ratios, actually improves handling. Please visit this link for more information: http://www.ozebiz.com.au/racetech/theory/align.html

Stretching tires has many pros and cons. Yes, the look is appealing, and it will help you clear your new wheels, but you are fitting tires on a rim that it wasn’t made for. It is easier to damage the rim or pop the tire. Also, the sidewall of the tire will flex less since it is being stretched, so many drifters run stretched tires. Other than that, there is really no advantage or disadvantage performance wise, just make sure you maintain correct pressures.

Various tire stretches:

225/35/17 on 17x10
245/35/19 on 19x10.5 Falken 451
For a great thread on tire stretches you might want to check out this thread on vsc by CL member hoebag:
Consolidated Tire Stretch Thread!

Note: Not all tires will stretch the same. Some tires have more rigid sidewalls than others, that will not stretch as much.

If I forgot to mention something important, or if there is an error, please PM me. If you see one of your pictures here, and don’t want it here, please PM me.


I encourage CL members to contribute to this thread.

CL Member Name:
Rim Brand and Type:
Rim Size f/r:
Rim Offset f/r:
Tire Size f/r:
Suspension Setup:
Comment On Ride:
Fender Modifications:
Any other comments:
Picture:

Edit: February 09. 2008 - Been real busy lately and always wanted to update the thread with the photos i've gather throughout time, and will update the photos above and add accordingly. For now, this was my setup a long time ago:

CL Member Name: newyorksc/workaholic
Rim Brand and Type: CCW Classics
Rim Size f/r: F: 18x10 R: 18x11
Rim Offset f/r: F:+24 R:+32
Tire Size f/r: F: 245/35 R: 275/35
Suspension Setup: Tein Flex
Comment On Ride: Very Tight, But Too Bouncy
Fender Modifications: Rolled
Any other comments: No rubbing when camber was not "fixed".
Pictures:

Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.

This was the rear tire after a few months (275/35 Toyo TR1 on 11" Barrell):
Click the image to open in full size.Click the image to open in full size.

The overall stance of the car with the setup:
Click the image to open in full size.Click the image to open in full size.
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Last edited by newyorksc; 02-09-08 at 01:54 PM..
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Old 04-12-05, 03:42 PM   #2
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GREAT IDEA

CL Member Name: RScott
Rim Brand and Type: Volk GT-Cs
Rim Size f/r: F:19x8.5 R:19x9.5
Rim Offset f/r: F:+39 R:+37
Tire Size f/r: F:245/35/19 R:275/30/19
Suspension Setup: Current: Tein HA coilovers
Previous: 97 TT stock shocks/eibachs
Comment On Ride: MUCH stiffer than stock. However, after going from 15" wheels with the tall sidewall to the 30 profile tires on the 19s, road noise and bumps were much more noticeable but also steering was more responsive and the ride truly did feel more solid (due to less flex in the sidewall)
Fender Modifications: Shaved rear fenders. Fronts clear without any modification.
Any other comments: Face 1 in front and Face 2 in the rear. Fronts have enough clearance even after TT brakes to fit a finiger between the face of the caliper and the inside face of the wheel. In the rear i made the mistake of ordering a high disc rear so clearance is ridiculous at the expense of amount of lip. 2 fingers of clearance between the face and the TT calipers. I still love the wheels more than any other i could afford though and have no regrets in my choices other than the disc fitment in the rear.
Picture:
Click the image to open in full size.
Click the image to open in full size.
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Click the image to open in full size.
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Last edited by DaveGS4; 02-10-06 at 08:17 AM.. Reason: fixed pictures
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Old 04-12-05, 03:43 PM   #3
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excellent writeup Greg! I'll be contributing 2 sets of rims later in the week
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Old 04-12-05, 03:44 PM   #4
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nice write up

i have a
93 sc 300
18X8.5 up front
18X9.5 in rear
slight rubbing no big deal
offset of both i believe are +35
they are adr cypers and they clear the big brake upgrade from a ls400
also have lowered it considerably with tein coilovers
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Old 04-12-05, 04:23 PM   #5
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Dam, just what i needed. just one other thing tho, can you try to put a lttlel more info on 20 inch applications like tire sizes an modifactions that need to be made. An just for infomative reasons, i have upgraded my wheels to 19x9.5 all around an have 275/30/19 all around as well i only had to roll the left rear fender the rest where left with no modifactions. the car runs smoothe. an looks great.
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Old 04-12-05, 04:41 PM   #6
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CL Member Name: SC400Dude
Rim Brand and Type: Volk Racing/Rays Engineering Gram Light 57 Pros (Grey)
Rim Size f/r: 18x9(F), 18x10(R)
Rim Offset f/r: +40(F) Hi Disk, +38(R) Medium Disk - MKIV Supra TT Fitment
Tire Size f/r: 245/40(Front - Bridgestone Potenza), 275/35(Rear - Dunlop SP9000)
Suspension Setup: Stock
Comment On Ride: Good ride on the Potenza/Dunlop combo, very tolerable - even on rough roads.
Fender Modifications: Rolled rear fenders.
Any other comments: Rear wheel/tire combo rubs only going over hard dips. Can be somewhat alleviated if I ran a 265 tire in the rear. Also, it will be interesting slamming my ride with Coilovers in the future..LoL
Picture:
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Old 04-12-05, 04:48 PM   #7
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nice info guys.

hopefully this kills all those pointless wheel threads that noobs dont' search.
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Old 04-12-05, 04:56 PM   #8
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My contribution:

CL Member Name: TopSCecreT
Rim Brand and Type: Racing Hart CX multi-piece
Rim Size f/r: 19x8.5 Front 19.10 Rear
Rim Offset f/r: +37 Front (high disk) +42 Rear (low disk)
Tire Size f/r: 245/35 Front 275/30 Rear
Suspension Setup: Tein CS coilovers
Comment On Ride: No complaints on the ride, the SO-3 are quiet.....but overall good ride
Fender Modifications: Shaved rear fenders
Any other comments: My coilovers are set at the lowest drop, so when i turn the wheel all the way or corner pretty roughly, i rub
Picture:

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Last edited by DaveGS4; 02-10-06 at 08:18 AM.. Reason: fixed pictures
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Old 04-12-05, 05:10 PM   #9
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i'd need help on gettin the offset i'd need for my rims in the summer. I don't see anyone running 285/35/18s and so i'm wondering what offset would i need to run this in the rear. would i need to roll the fenders or shave it? ideally i'd like to have it "Many people choose to go with a lower offset, or run spacers, so the wheels will not appear to be sunken, and come to the edge of the fender, for a more aggressive/clean look." in that respect, much like TopSCecret's rear. If ya can help me with finding the right offset to avoid rubbing, thanx a whole bunch.

Plans: 18x8.5fr and 18x10rr HRE 547R's High Disk setup front and rear (plan on gettin the endless racing big brake kit 6pot/4pot) also here is my car, and like TopSCecret, i also rub on sharp turns as is right now, so i plan on raising it an inch also when i put the rims on, would that help in going over the bumps and turns and avoid rubbing?

Click the image to open in full size.
Click the image to open in full size.
closer look at the drop
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Last edited by DaveGS4; 02-10-06 at 08:20 AM.. Reason: fixed pictures
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Old 04-12-05, 05:19 PM   #10
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tony- thanks man i'm looking forward to those pics!

lexant- if your going to order from hre, are you going to go with the offsets that they provide? are you going to go with custom offsets decided by yourself? click on this pic, its a 285 tire on a 10" wide hre rim, unsure about the offsets as they keep it private, but i showed a couple people here and it is estimated to be around +40 or +42, but if you go order with them, or most custom wheel companies, they will use their own offsets that they see fit for our cars. also, let them know that you need it to fit the endless brake setup.

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Old 04-12-05, 05:28 PM   #11
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Lexant - what kit is that?

On a set of 18x8.5/18x9.5.. will a 38mm offset on the front wheel clear either the ls400 or TT brake upgrade? Thanks in advance..
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Old 04-12-05, 05:59 PM   #12
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ok i have 19x8 front and back will 215 35 19 be to small? i wanna conftable ride so what u guy sugest ????
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Old 04-12-05, 06:12 PM   #13
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Quote:
Originally Posted by TopSCecreT
My contribution:

CL Member Name: TopSCecreT
Rim Brand and Type: Racing Hart CX multi-piece
Rim Size f/r: 19x8.5 Front 19.10 Rear
Rim Offset f/r: +37 Front (high disk) +42 Rear (low disk)
Tire Size f/r: 245/35 Front 275/30 Rear
Suspension Setup: Tein CS coilovers
Comment On Ride: No complaints on the ride, the SO-3 are quiet.....but overall good ride
Fender Modifications: Shaved rear fenders
Any other comments: My coilovers are set at the lowest drop, so when i turn the wheel all the way or corner pretty roughly, i rub
Picture:

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moar pics
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Old 04-12-05, 07:14 PM   #14
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Thumbs up Most useful thread in a while

Oh man great info right here! Should be a sticky for future reference (mods??? ).

Anyway, here's my set up... for now

CL Member Name: Soarer_25GTT (Jose)
Rim Brand and Type: ADR Sterling, true diamond cut type
Rim Size f/r: 18x8.5"
Rim Offset f/r: +38mm
Tire Size f/r: 235/40, 265/35
Suspension Setup: Espelir Active Super Down lowering springs, factory Tokico TEMS shocks
Comment On Ride: Very smooth! a little too low for my liking but bearable, sideways over speed humps is a MUST... Bottoms out on potholes (hate potholes) but otherwise no problems. A bit of negative camber up front (worn front tyres, but after a year's worth of driving). Very nice if you want just lowering with near stock ride feel.
Fender Modifications: None at the moment, may flare fenders once I get a camber kit to fix up the camber.
Any other comments:I need 19's
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Old 04-12-05, 07:26 PM   #15
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Quote:
Originally Posted by BrownDuckz
Lexant - what kit is that?
Looks to be a JIC Magic kit.
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Old 04-12-05, 07:26 PM
 
 
 
 
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20x10, 40, 5x1145, back, bolt, fit, kdw2, pattern, sc300, sc400, size, stretched, stud, tire, wheel, wheels, widest

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