Tyre Sizes

[Nitro]

If I purchase new rims which are 18"x8 what size tyres do I need to keep the same size rolling circumference as I have on my standard 2,8 Q which is on the factory 16" with 205/55/16

 

[jcb]

225/40 but personally I would run 235/40 and prtect your rim abit more

http://www.tyresave.co.uk/tyresize.html

 

[Geeman]

...and I'd run 215/40's - each to their own!

 

[aragorn]

Craigs running 225/40r18 on his S4 on 7.5x18's, and i can see what JCB means about the rim protection.

http://www.lr90.org/gallery2/main.php?g2_itemId=283&g2_imageViewsIndex=1

Thats a pic of his car. As you can see they're fitting reasonably tidy on there, but with a half inch wider rim, your going to have yourself some kerbfinders.

 

[jcb]

I have 235 on 8.5J rims and they are just right, could do with a bit more lip protection but it really depends on teh make of tyre.
Goodyear F1's had more lip than MichelinPS2's

 

[Oranoco]

235/40/18 would be my ideal choice but the hike in price between them and the 225/40/18's I do use rules them out for me

 

[badpanel]

I'm with Geeman!
Just put 215 40 18's on mine instead of 225's they have a bit of rim protection but rims need refurb at some point because of previous owner.
Just dont drive so close to kerbs (reads -don't let your missus drive it!!)

 

[Oranoco]

^^ pmsl. This is one bonus I've found since my missus ****** off. No more kerb damage to my alloys. Stupid bint managed to reverse into a hedge and chunk one of my 18's in one morning.

 

[phoenixv6quattro]

Fuc**ng chicks! Your(and your car)much better off without her. Your head won't go to Sh*t and your wheels wont look like sh*t!!!!!

 

[Nitro]

I have seen some TT wheels for sale which are 18x9 running on 245/40/18 would these fit or would that be too wide? I dont want it to rub and my cars on standard suspension. Also would that give an incorrect rolling circumference