Widest wheel fitment 17-18" wheels on '70 Chevelle

[EndGame]

Just put a full UMI Performance suspension all the way around the car with QA1 single adj. shocks this summer, but got big block springs somehow. Ripping them out and putting dual adjustable QA1 coil-overs on. Now I'm looking for 17-18" wheels and want 10" wide front and 12" wide rear if they'll fit without mods. I really want the OE1 and OE2 wheels from Forgeline, but I think they're a bit outta my price range right now.

[Conde69]

Anything x 12's will not fit without moving your frame inboard.

[chevelletiger]

Anything x 12's will not fit without moving your frame inboard.
What above said widest on the rear would be 11.00 wide wheels in the rear 315 tire

[EndGame]

Thank you for the response! The car is in the shop right now. It got a new GM 350 crate engine, rebuilt trans, QA1 single adj. coilovers, exhaust, long tube headers, etc. Wheels and tires are the next thing on the list.

[MassMalibu]

I have a full UMI suspension in my 70’ as well, with 18x10/295s front and 18x11/315s rear. There is room up front to go wider, but I had to roll the rear fenders to make sure there was room for the 315s in the rear.

You’ll love what some wide, sticky tires can do with that suspension!

[protour_chevelle]

a 315 in the front will rub on the sway bar from umi and reduce steering angle. You would need to switch to a splined sway bar with flat arms.