Quivver

Okay heres what happened, last week I purchased Volk GT-N's 18x10 for the rears and 18x8 for the front but when they arived at the shop they where 18x9 and the front tires rub really bad to where the metal is sticking out they are 235/40/18 with an offset of 37 which I believe is wrong. So the shop solution for me to return the front rims and tires and they will give me a 18x8 rim with 225/40/18 with an offset of 37 agian so my question is if that is the correct offset for the that rim and tire size, also my car is lowered 1 inch with H&R springs.

jpandes

I'm not an expert here. But isn't the correct offset for FD's 40. and I believe that you may want to get 235/35/18's. That may work, if no-t you'll have to buy some adjustable height coil-overs.

BTW, My car rubs really bad with eibachs and 17"s!

Quivver

I looked into that 235/35/18 is not an option, only 225/35/18 but I have 35 on the rear, damn this tire crap is to confusing

mjw

iTrader: (1)

It isn't confusing once you understand how offsets and tire widths work on the car, go to the suspension forum and search for posts by SleepR1.. his explanations for wheel widths and offsets will answer any of your questions. I have 18x8.5 in the front of my car with a 45 offset and have no rubbing, they fit even before I added my 2.5" coilovers. A 37mm offset is way wrong and with a 9" wheel pushes the tire out too far. Make those guys who got your wheels get you the correct offset for your car, it sounds like they don't know what they are doing. I am curious what your offset in the rear is as well.. better make sure because Volks cost $$$.. get it right the first time. Why the heck are they sticking a 235 size tire on a 9" wheel? Your wheel lip will stick out I would think. HTH

Matt
93 SSM

Quivver

The 37 offset for the 18x9 actually and the 18x9 came from a guy at volk, volk has a chart for each rim with differant cars, and the it said 18x8 for GTN needs a 37 offset, I was told by other rim shop that I should have a 42 for an 18x8, or should I go with an 18x9 with the correct offset

mjw

iTrader: (1)

Well I would say stuff the widest wheel in the possible, you may need to get some 2.5" coilovers to clear the shock/spring assembly at wheel lock. I am not positive on the width when this becomes necessary (it would be a combo of width and offset obviously). There are tons of threads on this in the wheel/tire/suspension/brake section though, I read through a lot of threads before I ordered my wheels. A 37mm offset with an 8" wheel may work, but I still think that is pushing it.. 42 sounds better. I am not sure what offsets are available for the GT-N off the top of my head, but 42 would work I think. Ask an expert on the forum though, I am going from what I remember them telling me.

Matt

Quivver

The back rims the 18x10 with 275/35/18 have a offset of 42 is that wrong also

SleepR1

Matt's pretty much spot-on with his comments.

8 x 17, 37-mm offset and 225/40-18 tires up front will be fine with no rubbing; 10 x 18, 42-mm offset and 275/35-18 tires in back will be fine with no rubbing.

IMO you should go with 285/30-18s with the 10 x 18s rather than 275/35-18s. The overall diameter of 285/30-18 is closer to stock (24.8 inches); 275/35-18 is too tall (25.7 inches)--will introduce speedometer error, and will change rear end gearing also.

The widest you can go up front with the stock style suspension springs is 9 inches with 255-mm section width tires. 45-mm offset for a 9-inch wide rim up front is proven to provide plenty of clearance.

I have 9 x 17, 45-mm offset SSR Integral A2s with 255/40-17 Yokohama AVS Intermediates all the way around with no rubbing. Kyle Bacon has 9 x 18, 45-mm offset SSR Integral A2s with 255/35-18s all the way around, and Kyle has no rubbing.

You can run 10-inch wide, 51-mm offset with 285/30-18s up front, SO LONG AS YOU HAVE 2.5-INCH COIL SPRINGS. If you have stock style springs, your wheel rims will rub against the lower spring perches on the inboard side of the wheels up front.