Wheel sizing tool

[Ackattack]

I'm wanting to run a 315/35/20 on the back of my truck and maybe a 275/40/20 or 245/45/20 on the front. To fit the 315s on the back and the 275s on the front the backspacing is going to have to be right on. I've seen some tools on TV shows that you kinda mount too your tires, and then you can adjust them to determine exactly what your back spacing is. Are there companies out there that rent these tools out, or do you have to buy them?

[86Cutlass383SR]

I just went to Summitracing.com and they have the Percy's Wheelrite. New lowered price is $89.95. It measures up to a 30" dia wheel (!). For the cost of a set of 20" wheels and tires and needing to get it right on, I'd invest $90. Then, either sell it or measure a few other cars and charge a bit for your time to help recoup some of the cost.

V8TV.com has a tech article on using this product if you want to check it out before you buy.

Sounds like I'm advertising for them but I'm not. I'll buy me one too, before I order my 17's just so my "measurements" are right and I don't have to order 2 more rims because I was off on my calculations by 1/4" and my tires rubbed.

Doug

[Moabdude]

I bought this Precy’s Wheelrite tool but I am not satisfied with it. It does not count the fact that a 10” wheel is actually 11” wide on the outside. So if you think a 10” wheel with 5.75BS will perfectly fit with the wheelrite tool, you will be unhappily surprised when your new bought wheels arrive and do not fit.

Maybe I am just using the tool wrong??

[sellersrodshop]

i fabbed up my own, out of scrap materials in the shop that measures 15"- 22" diameter 7"-15" width . i also scaled the tool to show advertised size, but give the true wheel measurement eg; a 17x8" wheel actually measures 18x9" to the outermost lip. it took about 30 min to make & it's metal vs the plastic ones you buy.

i'll post a pic later ...

[gearheads78]

I also made one several years ago before I ever saw them for sell. Its primitive but works great if you use it correctly. I will post a pic if I think about it tonight.

[Ackattack]

I saw the percy's tool. I want to be able to mount the tire to the tool, and get the wheel measurements with the tire in place. The percy's tool only has one half...so you can't really mount it to the tire.

[gearheads78]

Here is my tool. can measure from a 23" all the way up to 34". the treaded rods adjust 1.5" in and out so if I need a longer rod for a given application it takes 5 min to make one.