biggest and widest wheels i can run on the back of my monte carlo?

[72'Monte]

i was on ebay in seen a 20x10 rim that i really like,but i don't know if it would fit my car.my car is a 72'monte carlo.what size and width can i go?i well notch the frame if needed.this is the rim i like http://www.ebay.com/itm/20x10-STREETER-SHOWWHEELS-FORD-CHEVY-MOPAR-DODGE-WHEEL-/271059369211?_trksid=p5197.m1992&_trkparms=aid%3D111000%26algo%3DREC.CURRENT%26ao%3 D1%26asc%3D14%26meid%3D3794763806022692541%26pid%3 D100015%26prg%3D1006%26rk%3D1%26sd%3D271059369211% 26

[Daren]

I have no experience with the car but a good starting point would be to take some measurements of the rear wheel openings. Take BS and offset out of the picture for now and assume that the center line of the wheel would be the mounting surface.

With a 10 wide wheel your are looking at a center of 5.5. A 20x10 is not actually 10 inches wide, but rather 11, hence my 5.5 measurement.

The question you need to ask yourself is: will 5.5 inches in either direction from the hub come into contact with the vehicle? The radius around the hub to check for clearance should be higth of the tire. Leaf springs, lower shock and upper shock mounts can all come into play. Go ahead and take those measurements and post back with ya got.

Even If you do get an answer posted by another member who is familiar with the car, it's still a good idea to take some measurements lest you run the risk of just cloning someone else's fitment. Their idea of perfect may not be yours.

This is just a starting point. Determining the BS of the wheel is next.

For example, if you vehicle has short axle housings and a big ol wheel well then you can run very little BS and have very deep "lips" or vice versa. Without a database of vehicle specific fitments then it is up to you to take some measurements and a bit of math to figure out how wide a wheel with what offset and BS you can and cannot run in your vehicle.

[72'Monte]

i well take the measurements of my wheel wells

[72'Monte]

i can get that rim in a 20x8.5.i think it well fit better.

[csouth]

You should be able to get a 20x10 on the rear with no problem, those cars have huge wheel wells. Take your time before your purchase. Its not the width that's the problem as much as the ride height and backspacing of the wheel.

Check this thread. He is running 18x10 in the rear, but the ride height is lower than you could get out of a 20". Looks killer

https://www.pro-touring.com/showthread.php?70891-72-Monte-Carlo-Goes-PT&highlight=monte

[72'Monte]

thanks,for the link.