I have 235/40/18 Toyo tires on my 18 X 8 Mille Miglia Rims and am need of some new tires this year. (The 2 goods ones picked up nails late last year). I found a smokin' deal on a set of 4 used Potenza Re040 225/45/18 tires. What are your thoughts on these tires? Does anybody have an opinion on running this tire size on an 8" rim? I don't like tires that look stretched over a rim and I understand that they wear unevenly and expose teh rim to more dangers. Thoughts?

 

personally i'd run the 235's.

 

You can run those on an 8" rim. I run mine on a 7.5" rim. I like that tire size, and with the offset and the extra .5" it looks perfect on my car.

 

i have g35 18" and i have 225/45/18 all around. but my next set would be 245/45/18 all around. that's how wide you can go on the 18x8 rims. Hope that helps

 

What do you guys think of a 245/40/18? Would Iget any rubbing with atore this wide? There are some dunlop SP Sport 9000's for sale on Ebay? Anybody running these?

 

For most tires sized 235, TireRack lists the acceptable rim size as 7.5-9.0, with 8.0 being the ideal tire size for a 235 wide tire.

Your rim size would be perfect, with none of that uneven wear you are dreading.

 

what about 245/35/18 ?

 

Whatsup vsamoylov.

Since your stock tires are 205/65-15, the 245/35-18 tires would be 3% off on the speedometer (too fast). TireRack says 2.9%, so I guess they'll be okay. If your asking about 245 size fitting the wheelwell, I hear that guys are using 245s with no problem, but I don't know the wheel offset to make that work for the 4th gens. For the 3rd gens (probably the same?), I hear you want an offset of 35-40mm to fit without rubbing.

If anyone else wants to check tire sizes, here is a tire size calculator link:
http://www.miata.net/garage/tirecalc.html

 

You could run a 225 on a 8" rim. But you will have ZERO rim protection when parking etc...

 

I had 225/40/18's on a 8.5 rim and it looked ok but absolutly no rim protection. I just bought me 235/40-18 but still haven't put them on yet. I would think 225 or 235 would be good for an 8" wide rim. I did't go with the 245 because i'm afraid it might rub too much. My 225's rubbed the inside wheel well plastic because i'm dropped on progress springs and my rim offset is 40.

 

I'd stick with the 235/40/18. I had 225/45/18's ON MY G35C's (fronts) but the 235/40/18's look better IMO. Plus, you get that litle extra bit of curb protection!

 

Can I mix and match 245/45/18 (back) wtih 245/40/18 (front) on my 2004 Max (SE)?

 

I had 225/40r18 Kumho 712 and now have 245/40r18 Toyo Proxes4. The 225's are very thin compared to the 245's. When I 1st put the 245's on after having the 225's so long,they looked like it was too much tire,but now I think it looks better than it did before. It def. rides better. If I had to do it again I would have started with the 245's. And I also bet I wouldn't have bent a rim if I had the 245's.

The tires in the sig are the 225's