Bought my new rims (Azev A's) which are 17x8" and they came with 235/40/17 tyres. Car is a 1990 Sierra XR4x4.

I know most use a 215/40/17 but is this for cheapness or because that's the widest that can go on?

Cant recall the offsets and all being well will try and test them on the car tomorrow.

Just curious as want to see if its worth trying to squeeze anything wider on.

Car is on Koni dampers and cosworth -25mm springs.

Any help greatly appreciated

Rob