What is the widest tire anyone has in their 1960 full size Plymouth? I need tires and I want to fill up the wheel wells more to get the look I'm after with my car. I want to stick with about a 27" tall tire and my car's suspension and body are completely stock. I currently have 215/75R15s in the rear and they look so narrow. I'm hoping that I could go to a 255/65R15 or similar. Let me know what you're able to run without any rubbing. Thanks.
Posted 2017-07-17 6:55 PM (#544291 - in reply to #544270) Subject: RE: 1960 Plymouth Belvedere Rear Tire Width
Location: So. California
It is best to just measure it out and see. Keep in mind that the closest inside point is not the body or the frame. It is likely the springs. I have 275x60x15 tires with 8" rims that have 0 offset on the back of my '58 Dodge and they fit very well without any rubbing at all. I would expect a 255 tire to fit without issue on yours, but you just need to measure it out. As you get wider, the offset of your wheels becomes more and more important. It seems that Chrysler designed their wheel openings to be centered with 0 offset at least from '57-'58.
Some advice on measuring: I like to install a wheel with a known offset & width on the car and then measure from that to determine the distances that are available to increase the size. This is easier and gives me more accurate results than by trying to measure from the drum face. You can figure out your wheel's offset by measuring the total width and backspace, but it helps if you have something that you already know the size for sure.
Posted 2017-07-18 6:17 PM (#544357 - in reply to #544353) Subject: Re: 1960 Plymouth Belvedere Rear Tire Width
Location: So. California
It's funny though, I had a devil of a time getting the stock wheels with bigger tires on or off my '56 Plymouth which also has a small wheel well area. However, I found that by using a wider wheel, it actually became easier to mount because there was more room to maneuver it around the brake drum. So with the wider wheel, I had no difficulty getting 235x60 tires on there, whereas, my originals were much skinnier.
Posted 2017-07-18 11:09 PM (#544376 - in reply to #544270) Subject: Re: 1960 Plymouth Belvedere Rear Tire Width
Location: Muskego, WI
Tonight I mounted a spare "squad car" wheel I have, measures 15"x 7". Of the 7" width, 4.5" are behind the wheel mount surface so I believe that would make the wheel 1" positive offset. Believe it or not, I still had plenty of room toward the leaf spring but I will be limited by the inside of the rear quarter panel. From the outermost lip of the wheel, I had 2.25 inches. Actual wheel overall width is 8", tire would obviously be centered on wheel so a 10" wide tire would still give me a 1.25" gap between sidewall and inside of quarter panel.
I also have rear disc brakes, which are much more compact than the drum setup. I think, when I have a chance, I'll take in to a tire shop and see if they can fit some 255/65R15 tires (28" x 10") in there.