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You're right, I didn't even think about that. A 295 tire on a 9.5 wheel is going to bulge out quite a bit past the edge of the wheel since a 9.5" wheel is a lot narrower (9.5 x 25.4 = 241mm). With a 9.5" wheel the 295mm tire is going to be 54mm wider than the bead seat, in other words it will stick out 27mm on each side. But a 305 tire on an 11" wheel is only going to be 25.6mm wider (11 x 25.4 = 279.4mm) than the bead seat, and stick out 12.8mm (1/2") past the beat seat on each side - which would put it about flush with the outer edge of the wheel since most wheels have about 1/2" from the bead seat to the outer edge. So even though his 19x11 +61 wheel sticks out 3mm more than a 19x9.5 +45 and a 305 tire is 5mm wider on each side, the 295 tire on the 9.5" wheel would actually protrude a whopping 14.2mm more than a 305 tire on an 11" wheel. Very interesting.
As for your comment about being lowered, I would think that would give you a little less clearance on the outside since the wheels get pushed out a bit as you lower it - but it also tilts the top of the wheel in a little giving it a slight negative camber (unless you have that adjusted after lowering it).
I have spent the last few days reading countless posts about wheel fitment and I'm trying to come up with exactly what you said - get the most aggressive fitment without having the rubber stick out past the fender lip and without needing major modification to the fender. But I don't know if I want to go with a heavy 11" rear wheel, I want to keep it as lightweight as possible.
Using your 19x11 +61 as a baseline, I'd likely go with one of these:
9x9.5 +42 265/35
9x10 +52 285/30
Hey Jleo !
You can PM the Bnizzle87 member here, he is running on 9.5" rear wheels with 295/30 michelin PSS tires
Hey Jleo !
You can PM the Bnizzle87 member here, he is running on 9.5" rear wheels with 295/30 michelin PSS tires
He's one of the guys I read about, he needed to roll & pull the fenders and I think still rubbed slightly. Another guy also got the Volk G25's in 19x9.5 +45 w/295 and also had problems rubbing even after rolled & pulled fenders. But if you read above I figured out why that is, because the 295 tire sticks out quite a bit past the edge of a 9.5 wheel compared to a 11" wheel where a 305 tire is flush with the edge.
For anyone who is interested, using KJH's specs (which I feel gives the perfect combo of aggressiveness & functionality, with little to no fender modification needed depending on the tires) and the willtheyfit.com fitment calculator, I came up with this chart of wheel sizes along with the corresponding offsets & tire sizes which will give the exact same stance. I also included tire diameters if you want to match front-to-rear or prefer the rears slightly larger. These numbers are going to be +/- a few mm depending on what tires you're running. You could probably get away with 3-4mm less in front and 2-3mm less in back if you're at stock height, and easily 5-7mm less in back if you don't mind rolling the fenders (which can be done for pretty cheap at any body shop).
Right now i'm running on 19x11" +52 Forgestar CF10 with 275/35r19 on stock suspension. No fender modded at all. I still see a little room for 285/30r19 tires for next time.
You can check on Modbargain.com for customing your offset. 19x11 forgestar wheels is not heavy just about the same stock wheels.
Right now i'm running on 19x11" +52 Forgestar CF10 with 275/35r19 on stock suspension. No fender modded at all. I still see a little room for 285/30r19 tires for next time.
You can check on Modbargain.com for customing your offset. 19x11 forgestar wheels is not heavy just about the same stock wheels.
Obviously you can always run a lower offset with a narrower tire, but my chart was meant for people who prefer a wider tire that is flush with the edge of the rim rather than being stretched at all.
And your numbers actually match up spot on with the chart I posted. A 275 tire on an 11" wheel is 30mm narrower than a 305, so it sticks out 15mm less on the outside. And your 52mm offset is 9mm less than 61mm so it sticks out 9mm more - which means you still have 6mm of clearance before the edge of the tire is where the 305 is on KJH's setup. So yes, you should definitely be able to get away with a 285 tire since they will only sticks out 5mm more than the 275's. But if you were to go with a 295 then you'd definitely need to roll your fenders to get the additional 5mm of clearance needed, and possible even pull them slightly depending on if they have a large "rim saver" on the outer edge or not.
one thing to note on 305 fitment is that we tested 5 different tires in this size all with different section widths. The PSS was by far the widest adding nearly 1" to the width over the narrowest tire. Also some wheels have a 1/4" protrusion on the rear lip making fitment more critical than others. There are no absolutes in wheel fitment which is one more reason we have a full linked rear end to make small adjustments for wheel and tire fitment.
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one thing to note on 305 fitment is that we tested 5 different tires in this size all with different section widths. The PSS was by far the widest adding nearly 1" to the width over the narrowest tire. Also some wheels have a 1/4" protrusion on the rear lip making fitment more critical than others. There are no absolutes in wheel fitment which is one more reason we have a full linked rear end to make small adjustments for wheel and tire fitment.
Exactly, that's why I said those measurements are +/- a few mm depending on what tires you're running. I realize there are no absolutes, this just gives people a ballpark idea as to what size rims will fit with the lowest offset w/largest tire size without any concern of rubbing. If you use narrower tires or roll the fenders you can get away with 5-10mm less offset, if you use wider tires you'll have to use a few more mm offset. And the numbers I listed are actually with PSS tires on a lowered car, so any other tire on either a lowered or stock ride height should fit with room to spare.
I ordered a set of forgestar CF5V wheels in 19x9 +35 & 19x10 +45. Will I be able to fit bridgestone potenza S-04's in 295/30/19 in the rear with rolling the fenders on stock ride height, or is that going to rub pretty much regardless? I haven't ordered the tires yet so I can still downsize them if need be.
I ordered a set of forgestar CF5V wheels in 19x9 +35 & 19x10 +45. Will I be able to fit bridgestone potenza S-04's in 295/30/19 in the rear with rolling the fenders on stock ride height, or is that going to rub pretty much regardless? I haven't ordered the tires yet so I can still downsize them if need be.
I had 19x10 +50 with 295 tires at stock height and they barely rubbed when the suspension was fully compressed, such as going over a large dip in the road at high speeds or going into a steep driveway too quickly. I couldn't even fit my finger tip between the tire and fender lip, it was that close, but it wasn't bad enough to make me want to get the fenders rolled. Therefore I think a 19x10 +45 w/295 would definitely rub since they'd stick out 5mm (.20") more. If you get 285/30 they would fit like my previous 19x10 +50 295 setup with very minor rubbing on occasion, or if you really want 295's just spend a few bucks and have the fenders rolled and they should fit fine. That's assuming you're at stock height. If you're lowered you might not even be able to get away with 285's on 19x10 +45 without rolling the fenders.
By the way, great taste in wheels! That's one of the wheels I'm looking at to replace mine that got stolen.
I ordered a set of forgestar CF5V wheels in 19x9 +35 & 19x10 +45. Will I be able to fit bridgestone potenza S-04's in 295/30/19 in the rear with rolling the fenders on stock ride height, or is that going to rub pretty much regardless? I haven't ordered the tires yet so I can still downsize them if need be.
I have the same exact wheels and offsets with PSS 275/30 lowered only .5" in the rear. I think 285/30 S04s would work fine without rolling but 295s would it would be necessary, even at stock height. For the front I have 245/35 PSS lowered 1" and I have almost no clearance from fender liner turned full clock either way. Front only rubs if I hit a huge dip (I've only noticed one time.)
I'm mostly leaning toward the same exact tires I have now for my next set, but if you get 295s please report back. I'll definitely be curious how they look and feel.
For anyone who is interested, using KJH's specs (which I feel gives the perfect combo of aggressiveness & functionality, with little to no fender modification needed depending on the tires) and the willtheyfit.com fitment calculator, I came up with this chart of wheel sizes along with the corresponding offsets & tire sizes which will give the exact same stance. I also included tire diameters if you want to match front-to-rear or prefer the rears slightly larger. These numbers are going to be +/- a few mm depending on what tires you're running. You could probably get away with 3-4mm less in front and 2-3mm less in back if you're at stock height, and easily 5-7mm less in back if you don't mind rolling the fenders (which can be done for pretty cheap at any body shop).
Thanks for putting up this chart based off of KJH's specs I think his set up looks great and fits all underneath the fenderliners without modifications. This is what I will look at in the future when I get an F and want to put on some aftermarket wheels which is usually the first thing I do
19x9 +22 aren't that bad.. all depends on the tire.
I had 9.5s +22 in the rear and couldnt have anything bigger than a 235. (Which isnt very reasonable)
Thanks for putting up this chart based off of KJH's specs I think his set up looks great and fits all underneath the fenderliners without modifications. This is what I will look at in the future when I get an F and want to put on some aftermarket wheels which is usually the first thing I do
jleonard71, what calculations are you using to get the offset. There is actually a simple calculation to use for different width wheels and how to determine the same offset. Your offsets look off to me. So I was just wondering how you determined your settings. I also came up with my own chart but with all different offsets, and not just Kens settings.
But going by Kens offset in the rear with +61, I have the following.
REAR
Size Offset
19x11 +61
19x10.5 +55
19x10 +48
19x9.5 +42
19x9 +35
03-16-15, 09:24 PM
I think his set up looks great and fits all underneath the fenderliners without modifications. This is what I will look at in the future when I get an F and want to put on some aftermarket wheels which is usually the first thing I do
