Edumacate on tire sizes

[Davicho]

Yeah I see what you mean.

Hey Rally sorry I'm late to the party. However, just for reference I am running Genjuan MS3 wheels which are 18x7.5 and a +52.5 offset. Unfortunately they are wrapped with some cheap Chinese tires called Evergreen EU72 which makes me question the preciseness of measurement. Surprisingly they have held up pretty good after 13k+ miles on them. Anyway they are a 225/45R18 and they are slightly too big because they rub up front at full lock against the inner plastic shield and at the top outer edge of the front liner at full suspension compression. The rear also rubs at full compression on the quarter panel fender line, needing a fender roll which I haven't done because I'm going to replace my tires with a 215/45R18 which were the stock size for the Genjuan MS3 wheels. I am also on the prowl on finding a clean set of RX-8 wheels for cheap which are 18x8 +50 offset which in that case I will go with a 225/40R18. Anyone local interested in trading my MS3 wheels for their RX-8 wheels or buying my MS3 wheels?

 

[ROBOTO]

Ok, so my new wheels got here. They are Enkei PF01 17x8 +50. Our OEM wheels are 17x6.5 +52.5. Our OEM tire size, according to Tire Rack, is 205/50-17. BUT when you see the recommended tire size for the Enkei it's 205/50-17! What gives? (scratch) I mean the wheel is 1.5 inches wider, yet Tire Rack is recommending the same size tire. Help? (screwy)

I have a couple of questions... so I understand these issues with rim width.

I also got a brand new set of wheels from the TireRack (on Christmas).
These are Enkei 17x7 with an offset of +45.
My five has OEM 17x6.5 with +52.5 (exactly like yours).

I am sticking with the same tire size for now (reusing the same tire, OEM Toyos). Because it is the very same tire, I do not expect to see or experience any notable differences when I move from the OEM rim with 6.5, to the Enkei with 7.

For the future, I want to get rid of the tire spin (wheels are prone to spinning in first gear under many situations: wet, snow, a little bit of sand, etc). Would a 225 / 45 R17 would theoretically help to reduce the spin? (obviously the compound is the main factor, but just consider the size for now)

 

[oldpunk78]

I'm running 215 45 18 on 18 x 8 +48 offset. I had zero rubbing issues until I dropped it 1.5". Now it just rubs the plastic at the top of the fender wall during hard corning with a big bump or going into a parking lot with a steep driveway with my wheels turned considerably. The rears still don't rub.

I'd say I still have about 1/2" clearance between the wheel and suspension. A 215 40 or a 225 35 would have been better choices. (Although, I probably wouldn't want to pay for the 35's.)

I'd say the best rim-tire size would be to just copy what MS sizes are. There's no real grip difference between the 7.5 and 8" rims.