pezzonovante

I posted this at G35driver and got no responses, I know you guys are more knowledgable here anyway so maybe someone can help.

Will the stock 2004 G35 6MT 18" Pilot Sports fit on rims with the specs below? I'm thinking of upgrading

I get the offset stuff and it's close to stock so should be ok, but I'm not sure about tire sizes. I would think the these fronts would be ok width wise since it's only .5" wider than stock and the tire should still fit. These rears are 1.5" wider than stock, so the tires are probably not wide enough. How do I figure out the tire width to the rim width? Also, any idea if they will fit over the Brembos?

ADR Wheels Spartan
Bolt Pattern: 5x114.3
Size: 18"x8.5" FRONT 2" LIP/ 18X9.5 REAR 3 " LIP
Offset: +28mm front/ +25mm rear

davidv

iTrader: (2)

My recommendations are:

8.5 inch wheel: 245 mm tire
9.5 inch wheel: 275 mm tire

DBTRACK

iTrader: (4)

+1

Spike100

I'm not sure your question was answered as you asked it.

I believe (but guessing since you didn't give your current tire and wheel sizes) you have these tire and wheel sizes: 225/45/18" (front) and 245/45/18" (rear) mounted on 4 wheels that are all 8"x18". And, you are asking if you can use these tires on 8.5"x18" wheels (front) and 9.5"x18" wheels (rear). If that is wrong, the rest of my response is not helpful.

If I understand the question: The answer is YES you can mount your existing 225/45-18 tires on the new 8.5"x18" front wheels, and Not recommended mounting your existing 245/45-18 tires on the new 9.5"x18" rear wheels.

For your new wheels, you should mount 245/40-18 on the front, and 275/40-18 on the rear. And, you should not mount the 225's you already have on the new front wheels and mount new 265-275's on the new rear wheels. That combination will result in poor handling and excessive under-steer.

The short answer is you should buy new tires for your new wheels.
--Spike

JDMFairladyZ33

iTrader: (37)

LOL that's pretty much all you had to say because that sumed it up.

For reals man, the easiest way is to use the 245/45/18s on the front on the 8.5" wheel and get new rears, but that is not a very good application because you'll be deviating from your stock rolling diameter height. You need to just pony up some cashy money and get the proper fitment.

Spike100

It's not quite that simple. Sorry for the verbose reply to the OP. I felt it was necessary to add some amount of detail since the question was in fact more complex than it appears on the "surface." I'm guessing here, but I believe the OP is possibly (but not necessarily) considering mounting snows on his stock wheels, buying "Nismo equivalents" (8.5" front and 9.5" rear wheels), and using his existing summer performance tires on the new wheels until the tires require replacement when he will buy larger tires. He wants to know if his existing summer performance tires will fit the new and larger rims.

If that is the case, I would add this: Tire fitment goes beyond just size. Actually, different brands of tires that are the same size will fit different wheel/rim sizes. Here is an example:

-- Michelin Pilot Sport 245/45-18 fits up to a 9" rim. (the OP's tire)
-- Eagle F1 GS-D3 245/45-18 fits an 8-9.5" rim.

Your suggestion, ("For reals man, the easiest way is to use the 245/45/18s on the front on the 8.5" wheel and get new rears, ...") won't work at all since the OP's car is equipped with TCS and probably has VDC as well , but you go on to say (...but that is not a very good application because you'll be deviating from your stock rolling diameter height."). So I wonder why you even offer this suggestion.
--Spike

1nate7

iTrader: (19)

If you really want to reuse the stock tires they will fit but be stretched. When they are worn out upgrade to 245/40, 275/40 like previously mentioned. I am not familiar with that wheel so I don't know if it will clear Brembos or not.

pezzonovante

Thanks for the great answer Spike, your assumptions are mostly correct.

I do have VDC and TCS and the tire sizes mentioned in another post.

I already have a set of snow wheels/tires (Blizzaks which I couldn't recommend enough, in combination with the VDC the snow is no problem )

My plan was to get a nicer set of wheels as cheap as possible as my stock wheels have some serious curb rash (mostly not from me!). My current rear tires are worn pretty low so I will probably get the 275's as suggested and not use the current 245s on the front. My 225s are still in great shape though so I'm gonna try them on the new 8.5" front wheels.

sluggoZ

iTrader: (129)

Spike100....that is a Great answer!