Can I run 225 X 40ZR X18 on my 2004 S? I already have 215 X35 ZR X 18 summer tires, but I want some run flats and this is the only size in 18" I can find. COOL S

 

I am currently running 225 40 18 on my 03 S and i have a lot of problems with the tires rubbing on the back wheels but really no problem in the front. I don't recommend it.

 

Exactly where on the vehicle does the rubbing occur, and do you think it is the 225 dimension? COOL S

 

might be the 225 dimension (although not everyone's 225 is the same)

i run 225/45-15 on a lowered Mini, and the rub is at 10 and 2 on the plastic wheel well trim under compression - outer tread shoulder to inner trim edge

in my case the rub never causes contact between the sheet metal and the outer edge of the tread, but I have "self adjusted" the clearance on the plastic as intermittant contact has worn away the plastic on both sides

i'd be cautious - a little more or less offset on the wheel and it seems possible that you could wind up with trouble

mebbe you could measure the tread width on the 225s, compware with the 215s, and then see if your 215s allow you sufficient clearance in this area between tread outer edge and fender trim inner edge?

 

Thanks for the input, Charles

My dilemma is that I own 18" wheels for summer that have performed very well with Nitto Gen 215 35ZR 18 summer tires. But here in Alaska you can be a long way away from help without a spare or run flats. My Nittos may not last much longer, so I'm working on the best replacement without spending more money to change the wheel size back to 17". I'm on 17"s now with Pirelli run flat winter tires. Rich