***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.
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.
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.
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
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
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
front: rim size 19x8; offset +45; tire size ???; no fender modifications
rear: rim size 19x8; offset +45; tire size???: no fender modifications
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.
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 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:
Comment On Ride:
Any other comments:
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".
This was the rear tire after a few months (275/35 Toyo TR1 on 11" Barrell):
The overall stance of the car with the setup: