whats the widest tyre you can use on a 18ich 8.5 j wheel

255 is the most common, you can just get away with 265 but you will have a small amount of sidewall pinch.

 

 

I tend to use this site for tyres as a rough guide: http://www.tiresandco.ca/equivalency-tables-advice.html

Edited November 21, 201312 yr by Lexx
Correcting a Typo

would a 275 be safe so would I use a 275 35 18 or 275 30 18

I would not use 275 on a 8.5j wheel.

 

I'm sure people on here are, and that they are fine with it. But the amount of tyre pinch would be horrendous, and the car will handle like a dog.

235 - 245 is a typical 8.5" width, 255 would be ok and the maximum you would want to use.

 

I doubt anyone here is using 275 on one, remember 8.5" is a typical aftermarket FRONT wheel width on the Z.

 

Most people are running 9.5" rears with a 265 - 275.

Edited November 21, 201312 yr by Yowser

mt front wheels is 8j and rear is 8.5j

will I get away with a 265

Just put 255 on it.

Seriously. You will ruin the handling of your car with anything bigger.

i got 9 on the front with 235 40 18 then on 10 inch on the back with 275 35 18 but i dont think yourll get away with 275 35 18 on a 8.5 maybe 265

yes 275 would be pushing your luck am going to try a 265

245 IMO. It gives you a completely flat tyre wall on an 8.5, any wider and the tyre will roll round on the rim too much and will look a little donut-ish!

 

My fronts are 8.5" wide with a 245, I'd not go any wider. Narrower and you start getting stretch...yuk!

 

 

my rears are 245 and there flat atall so am going to fit the 265 and just suck it and see will post pics once its done