Tire Size

[Paul and Judson]

We currently are running a 235/85/16 tires on our Series III 88. They have a lot of cracking on side walls and tread. We found a good deal on a set of 215/85/16 tires. Any problems switching to the smaller size tire? What are your opinions.

[TeriAnn]

We currently are running a 235/85/16 tires on our Series III 88. They have a lot of cracking on side walls and tread. We found a good deal on a set of 215/85/16 tires. Any problems switching to the smaller size tire? What are your opinions.

Well off hand, the ground clearance will be less with a smaller diameter tyre, the engine RPM will be higher at a given speed in a given gear but it will be easier to start from a stop in second gear. I don't know the diameter of the prospective tyre but a small diameter tyre will be effectively changing the gearing and if the tyre is noticeably smaller the vehicle may seem more peppy.

It might be easier to fit into a garage if height is an issue.

[gudjeon]

I used to run 235's and now run 215's. Short answer is I like the 215's better. About the same diameter as the old 7x16. Narrower, the better in my books. They are still tall enough that I can get decent speed as much the same manner as my old 235's. If you had instruments, the measurements could be compared, I'm sure. As for driving, not much different. Still stand tall and are not as heavy to heave when re and re.

http://i35.photobucket.com/albums/d187/gudjeon/JuneJuly10/Sept10248.jpg

215's can be had cheaper as they are common fleet size.:thumb-up:

[roverjohn]

I still have a few sets of 7.50X16 which is about the same size as your 235/85 but a tad bit narrower. The look really nice on Series trucks and give it that "factory look"

$300 for a set of 5

Here is the thread:

http://www.roversnorth.com/forums/showthread.php?t=9508&highlight=7.50

PM if you are interested.

[stomper]

Also, Because the 215 is narrower, it is a little easier to steer while stationary or driving slow. I have 215's on mine, and doubt I will go back to a 235.

[Terrys]

Sidewall cracking isn't uncommon even with tires under a few years old. The sidewall does alot of flexing, but keep in mind that the sidewall is also the thickest part of the tire; nearly twice as thick as the inside to bottom of tread.