weclome aboard VMF.

jez how many more 70 M1 are out there. seems like were getting 9 new ones a week.

 

Welcome to VMF. There's no magic. If the front tires rub when you turn and hit a bump you have a problem.

Many cars you see at car shows must be driven almost straight ahead, on smooth roads with no big dips. Not being a poop, that's the way it is! In some cases they may have the rubber suspension bumpers set/size to only allow 1" vertical travel, then have bone jarring stiff springs.


Slim

 

If you go with 8" wide wheels with 4.5" backspacing and 245x45R17 or 235x50R15 tires front and rear, they will fit perfect and you won't have any rub issues. The front will be close if you lower the car a whole bunch.

70 BOSS 302 had 15" wheels 7" wide, with F60-15 tires (equivalent of 225x60R15) and the envelope of that tire is very similar to the 245x45R17. I have 235x60R15 on my 69, with 15x7 Magnums having 4.125" backspacing, and have no rub problems. The 69-70 BOSS 302 had factory rolled (trimmed) fender lips in front, but I have used the original BOSS wheels and tires on a 70 fastback with no special fender treatment and no rubbing.

The 235x60R15 has a section width of 9.5" and height of 26.1"
The 225x60R15 has a section width of 9" and a height of 25.6"
The 245x45R17 has a section width of 9.6" and height if 25.7"

So, you can see that the first and last tires listed are nearly identical in overall size. Either will fit your car perfectly without any rubbing issues.

On my 66 fastback, I had to go to a 7" wide 17" wheel in front and used one size smaller 235x45R17 tire and it does not come close to rubbing even with the car sitting about 2" lower than stock.

 

Typically 8" wheel with 245 on the front and 9" wheel with 275 on the rear for lowered cars. 70_Fastback has his car lowered with those combinations and it works great for his car.

 

I appreciate you guys input. In retrospect, I should have planned this prior to painting the car, but where is the fun in that. I just want to be able to drive it anywhere and not worry about adding an extra crease or decoration in the fender when I hit a bump.

 

Do you know if 70_fastback had to roll his fenders?

 

17x8 4.75" bs with 235/45/17 and 17x9 5.5" or 17x9.5 5.75-6" with 275/40/17 should fit fine without rolling fenders, but no guarentee, every car is slightly different.