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How FAST can you go on split rims? Cant find this answer anywhere..
#1385294 Fri Nov 20 2020 04:56 PM
Joined: Nov 2020
Posts: 155
3
Shop Shark
Hi guys, I cant find this answer anywhere.. no I dont want to do 120 mph, but are they safe up to say 90 or something? (I plan to do 65-70)
1. How fast can you go without worrying? radial (with liners and tubes) OR bias ply?
2. Is split rim up to the task if you add 4wd or is that asking too much?
3. Should bearings be upgraded to a better version if radials or planning to go HWY?


'38 1.5ton; "The stuff is as tough as woodpecker lips"
Re: How FAST can you go on split rims? Cant find this answer anywhere..
38_1.5Ton #1385298 Fri Nov 20 2020 05:27 PM
Joined: Oct 2015
Posts: 303
P
Shop Shark
In the early 70's I drove a number of different pickups with split rims at 70 + mph for hours on end with radials and bias tires with no issues , never even thought about it
I would imagine if the tires are installed properly and balanced and of course rims in good shape there should be no problem .
That being said this is a seat of the pants opinion and I have no science or engineering data to back me up .

John


good planning is no substitute for dumb luck
Re: How FAST can you go on split rims? Cant find this answer anywhere..
38_1.5Ton #1385299 Fri Nov 20 2020 05:44 PM
Joined: Nov 2020
Posts: 155
3
Shop Shark
Thanks John. Nothing better than first-hand knowledge! Thanks for your input.


'38 1.5ton; "The stuff is as tough as woodpecker lips"
Re: How FAST can you go on split rims? Cant find this answer anywhere..
38_1.5Ton #1385342 Sat Nov 21 2020 04:24 AM
Joined: Jan 2008
Posts: 4,698
C
Shop Shark
I have had a commercial drivers license since 1959. I never worried about 2 piece rims. I bought my first 18 wheeler in 1964. I started making the switch to tubeless in the mid 70's. But it was not for safety. It was due to the fact that tubeless tires tend to have less flats than rube required. I made the switch to radials in the '80s and have been running super singles on my fleet for about the last 10 years. It is all about cutting expenses and turning a profit. Container haulers still use split rims on their container trailers. They do this because they park their trailers on the roughest parts of big cities and no one will steal split rims with tube required tires because they can't trade them for drugs. And container haulers run the speed limit and then some all day long. The speed limit on IH10 40 miles west of where I live is 80.

Re: How FAST can you go on split rims? Cant find this answer anywhere..
38_1.5Ton #1385364 Sat Nov 21 2020 03:21 PM
Joined: Feb 2000
Posts: 4,238
J
Shop Shark
I was still changing tires on school bus back on '95-'99 with three piece rims, we never worried about speed as long as the rim pieces were in good shape. Once they go together with 80 or 90 psi in the tire, they are not coming apart! It's the getting them together right, that you worry about.


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