1970 Cutlass Supreme Tire Sizes
#1
1970 Cutlass Supreme Tire Sizes
Hello,
I have been looking and looking for the right tire size for my 70 cutlass supreme and I have narrowed it down to a Nitto G2 245/45/r18 with an American AR605 Torq Thrust M 18x8 with a 4.5" backspace with a 0 offset for the front and a Nitto G2 255/45/r18 with an American AR605 Torq Thrust M 18x9 with a 5.94" backspace with a 24mm offset. My question to everyone that's able to help me understand tires is if this is a good setup to go with to fill in these fenders on this car and for running stock setup with a disk brake conversion. Want the most rubber on the road without having to rub or roll my lips in the back, the fronts say they would be 26.7" tall by 9.6" wide and the rears would be 27" tall and 10" wide. Any help would be much appreciated.
Thanks,
Mauch712
I have been looking and looking for the right tire size for my 70 cutlass supreme and I have narrowed it down to a Nitto G2 245/45/r18 with an American AR605 Torq Thrust M 18x8 with a 4.5" backspace with a 0 offset for the front and a Nitto G2 255/45/r18 with an American AR605 Torq Thrust M 18x9 with a 5.94" backspace with a 24mm offset. My question to everyone that's able to help me understand tires is if this is a good setup to go with to fill in these fenders on this car and for running stock setup with a disk brake conversion. Want the most rubber on the road without having to rub or roll my lips in the back, the fronts say they would be 26.7" tall by 9.6" wide and the rears would be 27" tall and 10" wide. Any help would be much appreciated.
Thanks,
Mauch712
#4
Those are close to stock height so your speedometer should be close. My 10" wide rims fit with ease, I believe 4.5" back spacing. That leaves an inch between the frame and rim lots of room from the lip as well.
#5
285/40R18 Tire Clearance
Mauch:
70-72 Olds A-bodys have lots of wheel well clearance in the rear. I have 285/40R18s on 18x9 rims with 5.25" backspace: I have about 1-1/2" clearance inside between the tire and frame and about 1-1/4" clearance on the outside between the tire and fender lip. According to the Tire Rack website these tires have a section width of 11.4" and are 27" tall.
Here's some pics from my project.
70-72 Olds A-bodys have lots of wheel well clearance in the rear. I have 285/40R18s on 18x9 rims with 5.25" backspace: I have about 1-1/2" clearance inside between the tire and frame and about 1-1/4" clearance on the outside between the tire and fender lip. According to the Tire Rack website these tires have a section width of 11.4" and are 27" tall.
Here's some pics from my project.
Last edited by cdrod; March 23rd, 2020 at 07:49 AM. Reason: typos
Thread
Thread Starter
Forum
Replies
Last Post
olds 307 and 403
Wheels and Tires
15
December 10th, 2017 06:50 AM
Levellord
Wheels and Tires
10
May 31st, 2017 08:52 AM
misterthews
Wheels and Tires
1
September 6th, 2011 11:14 AM