What's the widest anyone's running yet?

[Joe Weinstein]

Hi all. I like to autocross, so I want cornering grip, and the
first thing I want is as wide a tire as possible, front and back.
Does anyone have 9" or 9.5" fronts? 11" rears? What are the
wheel offsets, and which tires are you running? Do you have
any rubbing? Did you roll up your inner fender edges?

thanks,
Joe

[PantherGTBlack]

Hi all. I like to autocross, so I want cornering grip, and the
first thing I want is as wide a tire as possible, front and back.
Does anyone have 9" or 9.5" fronts? 11" rears? What are the
wheel offsets, and which tires are you running? Do you have
any rubbing? Did you roll up your inner fender edges?

thanks,
Joe

Well Joe, I did some in store fitment with TireRack. I had a 19"x9.5" on the rear with at +35 offset. I had a 255/40 on the wheels and had rubbing. Hope that helps. Swapped to a +45 offset, otherwise same dimensions and took car of the rubbing.

Up front I'm running 19x8.5 +45 offset...245/40 tire, no issues there either.

IIRC the stock wheels run a +48 offset, just for your reference.

[99-LS1-SS]

Hi all. I like to autocross, so I want cornering grip, and the
first thing I want is as wide a tire as possible, front and back.
Does anyone have 9" or 9.5" fronts? 11" rears? What are the
wheel offsets, and which tires are you running? Do you have
any rubbing? Did you roll up your inner fender edges?

thanks,
Joe

I think you can fit 9's up front but I think the rear is limited to 10's with the correct offsett (~55mm)

[Ktlplxm]

10.5 rear with the right offset and a 285/35 on a 20 is the largest I've squeezed in

[99-LS1-SS]

I wonder if you could fit a wider rim if it was a 19 instead of a 20?

[EcoBrick Bob]

I am running stock tires on 40 offset 8.5 Beyerns. If I hit a sharp bump or dip at a severe angle at low speeds, like pulling into a driveway etc., i hear a zing in the front. Think tire might be hitting the fender liner. It is not an issue worth worrying about because it would never happen at normal driving speeds.

In the rear, I have 9.5 Beyerns with 45 offset and very wide 285's. They are nearly 2 inches wider than stock, with a cross-section of almost 12 inches and a tread nearly 11 inches ( 050A 285 -19 Bridgestones) Seem to be fine after 200+ miles. No rub marks on tires or fender edges. If you can get a 55 offset wheel, you could probably get even larger tires under the rear. The Aussies have...

[Kolossus]

i'm ordering a set come march...
19 x 8.5 35mm offset stock tire size
19 x 9.5 40 mm offset 285 35 out back

called tirerack to see if the larger size would fit... they said no problem at all.

[JMorris]

I know that you can run a 9.5 in front with a 275 and I have been told from Work rims that a 11 will fit in the rear but I'm not sure what size rubber they had in mind, for sure the 285 would fit. I wanted the works in a bad way but I just can't pull the trigger on 1200 bucks a single front rim and 1400 each for the rears.

[GeorgeInNePa]

I know that you can run a 9.5 in front with a 275 and I have been told from Work rims that a 11 will fit in the rear but I'm not sure what size rubber they had in mind, for sure the 285 would fit. I wanted the works in a bad way but I just can't pull the trigger on 1200 bucks a single front rim and 1400 each for the rears.


????
lol


Once rims become as much as FI, I tend to lose interest.

[incon3037r]

im running 20x8.5 245/35R/20 front and 20x10 275/30R/20 rear

[99-LS1-SS]

????
lol


Once rims become as much as FI, I tend to lose interest.

Me freaking too! Dang! I would have to have a lot of disposable income to shell that out plus my car would already have to be as fast as I wanted it.

[Joe Weinstein]

Complete Custom Wheel does a reliable job with race-worthy wheels,
at about $2600 a set, and they'll put your offset where you want it
to within 1/32nd":

http://www.ccwheel.com/files/wheelprofiles.php

[Mlozano]

I'm going to try and put some 305's in there, i figure 55 offset on a 18X10 or 19X10 wheel with 30-45 aspect ratio. Gonna go talk to a shop cause i can't even find tires online with that much offset. I know someone on one of the boards is running 20X10 with 285 in the rear with no mods to the fender. I don't want to MOD my fender either.

[Ktlplxm]

I'm going to try and put some 305's in there, i figure 55 offset on a 18X10 or 19X10 wheel with 30-45 aspect ratio. Gonna go talk to a shop cause i can't even find tires online with that much offset. I know someone on one of the boards is running 20X10 with 285 in the rear with no mods to the fender. I don't want to MOD my fender either.

A 305 WILL rub. It can be fitted in the wheel well without rubbing with a 48 mm offset but once you drive and get any body roll it begins to rub. A 295 is about the biggest without major rubbing; but you still have to be very carefull

[Superdave]

Another option is having factory wheels widened. I wouldn't mind having 9.5" fronts and a 10 on the rear in a factory wheel.

[JMorris]

Sounds like you could do a 305 with a fender roll and a big offset.

[SFC]

I dunno, there's people running the breytons with 10" +38 wheels and 285/30R/20 tires lowered. I would think stock height, a nitto 555r 305 would fit (they tend to run skinny from everyone I've talked to). I know I'm planning on giving it a shot if I sell my current wheels ;)

[Ktlplxm]

Its not so much where the NItto runs skinny, but rather the others (MT) run way wide. Think of it like this; even with a 58mm offset on a 10" (20 mm being the difference in width in a 305 and a 285) the point at which it rubs the worst (where the quarter and rear bumper attach) is still the same distance from the tire. So although rolling the fender will help up top, you still scrub the tire at the aforementioned spot. Then on the inside, you are only a 1/4 inch away from the inside edge of the body. Take into account the amount of deflection these cars can have without the Pedders X-frame bushings (12mm side to side) or the amount of lateral roll without stiffer sway bars (20mm), and you can see why the 305 will take a severe beating from the car. IF you stiffen the rear considerably, don't lower it, and use them for primarily the strip, you may not run into much of a problem. Oh and also keep in mind that a 305 is at its "truest" when used on a 10.5" wheel not a 10".

[SFC]

Its not so much where the NItto runs skinny, but rather the others (MT) run way wide. Think of it like this; even with a 58mm offset on a 10" (20 mm being the difference in width in a 305 and a 285) the point at which it rubs the worst (where the quarter and rear bumper attach) is still the same distance from the tire. So although rolling the fender will help up top, you still scrub the tire at the aforementioned spot. Then on the inside, you are only a 1/4 inch away from the inside edge of the body. Take into account the amount of deflection these cars can have without the Pedders X-frame bushings (12mm side to side) or the amount of lateral roll without stiffer sway bars (20mm), and you can see why the 305 will take a severe beating from the car. IF you stiffen the rear considerably, don't lower it, and use them for primarily the strip, you may not run into much of a problem. Oh and also keep in mind that a 305 is at its "truest" when used on a 10.5" wheel not a 10".


I'm not talking vs. other D/R's. My buddy that has been selling tires for 10 years said the Nitto 305 is skinnier than the 285's I have on right now. I have 0 rub issues in any of the spots without any pedders hardware on my car. The car goes hard through the twisties at least once a week.

If it rubs I'll just go with a 285 instead, but I'm fairly certain, after reading other people's experiences that it will work just fine. Last year people were saying you couldn't go any wider than a 265 in the rear on these cars without rubbing...

[jimmytt6]

Complete Custom Wheel does a reliable job with race-worthy wheels,
at about $2600 a set, and they'll put your offset where you want it
to within 1/32nd":

http://www.ccwheel.com/files/wheelprofiles.php

Yup I got my CCW wheels last week..freakking beautifull rims
Can't get them in 20's though for the G8 if that's what you want.
I got the 19x9 up front and 19x10.5 in rear
What also nice is that there about 5 lbs lighter than stock 19's.
Service was great only took about week and half to get them.
Even the weights were polished..little expesive but very nice rims.

[JMorris]

Yup I got my CCW wheels last week..freakking beautifull rims
Can't get them in 20's though for the G8 if that's what you want.
I got the 19x9 up front and 19x10.5 in rear
What also nice is that there about 5 lbs lighter than stock 19's.
Service was great only took about week and half to get them.
Even the weights were polished..little expesive but very nice rims.

FYI guys, many of the rims that ccw makes and lists as only coming in 19's can be made in a 20 upon request. I know because I asked just the other day.

[jimmytt6]

FYI guys, many of the rims that ccw makes and lists as only coming in 19's can be made in a 20 upon request. I know because I asked just the other day.

Interesting..didn't know..
They say you could get any style in 20's???
I know they list some styles in 20 but smallest is 20x10 and
that's not going to fit up front on our G8's..

[Ktlplxm]

I'm not talking vs. other D/R's. My buddy that has been selling tires for 10 years said the Nitto 305 is skinnier than the 285's I have on right now. I have 0 rub issues in any of the spots without any pedders hardware on my car. The car goes hard through the twisties at least once a week.

If it rubs I'll just go with a 285 instead, but I'm fairly certain, after reading other people's experiences that it will work just fine. Last year people were saying you couldn't go any wider than a 265 in the rear on these cars without rubbing...

Not saying your buddy is wrong, but I've been doing this close to the same amount. It all depends on which 305 you plan on using. Nitto has 3 "305" drag radials, all with different aspect ratios. I assumed you were running the 35 series since it is the closest to our heights. In that scenario the 305 is almost a full inch wider than the widest 285 I know of (in our height range). Here are the widths"
305/35 = 12.4" @ 26.42"
305/40 = 12.13" @ 27.72"
305/45 = 12.05" @ 28.78"

285/30/20 = 11.02" @ 26.93
285/35/19 = 11.30" @ 26.93
285/40/18 = 11.42" @ 26.97

I can guarantee if you have an off the shelf production 285 in the appropriate height, it is not wider than the 35 series 555R. The main reason people said the 265 was the widest was known wheel selection and placement. They also took into account body roll, as well as chassis shift, and a 265 was the size that cleared under ALL circumstances. If one was wanting to just sit the widest tire possible in there and not care what got hit or scraped, a full 325 can be shoved in there with the right offset theoretically.

[DaMadMonkey]

just browsing around and finding it interesting how much the car has changed in america. the standard wheels in america are tiny compared to aus. but, after just putting new rubber all round on my gts, i wish it had smaller boots haha.

i got a 07 VE GTS, lowered and i got a set of toyo 295/30-20 on the back, on the stock rims, loves it haha

tire prices are crazy tho. the GTS comes with bridgestone potenza's all round OEM. and because of this, the prices sky rocketed. $900aus each for the rears, $800 for the fronts. my 295 toyo's cost 550, and matching 245 toyo's on the front for 440 each. half the price. tho the potenza's are awesome pieces of rubber.

just making noise
damadmonkey

[55belairgasser]

DaMadMonkey, How about posting some pics. of the car. All around please!! Some inside pics., and take a close up or to of the rear tires. Thanks - Lance

[JMorris]

305 is as wide as it gets with the perfect offset and minor modifications.