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Old 02-16-2020, 12:30 PM   #1
Locodriver
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Wheel Stud size

I have a 2017 Keystone Fuzion 371 Toy Hauler and I want to buy new rims and need to know the wheel stud size. The owners manual doesn't cover this and my dealer told me he had no idea. Before I order the new rims they need to know the stud size as it could be 1/2", 9/16" or 5/8". Any help would be greatly appreciated.
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Old 02-16-2020, 12:52 PM   #2
ChuckS
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I’d simply measure the stud.
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Old 02-16-2020, 07:07 PM   #3
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Stud size probably will not matter. We upgraded to disc brakes this past June, and the upgrade included rotors with 9/16” studs while the drums had 1/2” studs. I contacted Performance Trailer Braking who did the upgrade and was told that most if not all these trailer wheels will work on any size from 1/2” to 5/8” studs, so the only change was lug nuts were replaced. So long as the stud circle diameter is correct, your wheels will work just fine. Your rig probably has 1/2” studs.
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Old 02-17-2020, 05:56 AM   #4
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Wheel stud

Thanks for the information.
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Old 02-17-2020, 07:52 AM   #5
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Thanks for the information. Wondering why Boar wheels would insist on knowing the correct stud size? These new 19.5" tires and rims are not cheap and they are ordered on line or by phone and shipped to your address. As we are travelling we plan to switch them out at our next stop in Texas.
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Old 02-17-2020, 08:03 AM   #6
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Quote:
Originally Posted by Locodriver View Post
Thanks for the information. Wondering why Boar wheels would insist on knowing the correct stud size? These new 19.5" tires and rims are not cheap and they are ordered on line or by phone and shipped to your address. As we are travelling we plan to switch them out at our next stop in Texas.
Are you sure on that 19.5" size. I looked up and they are listed as MDT tire/wheels. If that's what you are in fact ordering, why go with such a large and probably much stiffer tire?
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Old 02-17-2020, 08:33 AM   #7
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yes they are 19.5" rims with low profile tires. I have meet other RV owners that have done the conversion. They love them. One fella had 5 blow outs using RV tires each time he bought better rv tires which just have more steel belts and cause more damage to the rig when a blow out occurs. I'm told they ride and tow better and can get 100,000 miles or more out of a set. My rig is 17,350 lbs., without my Harley Bagger and Golf Cart loaded in it. The factory tires are rated for 1,640 lbs @ times 4 = 6,560 lbs. Am I missing something here?
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Old 02-17-2020, 09:03 AM   #8
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Your stock tires should be a 235/85R16 with a load range G. A quick look of various tires shows a weight capacity of 4000# per tire, 3860 if used in a dually configuration. 4K x 4= 16k and figure 20% of trailer weight on the pin at GVWR of 17K, 3200#, you have plenty of tire carrying capacity with the stock tires/rims. Granted the brand may be chinese tire crap but there are good ST tire options in stock sizing.

Unless you are the unusual RV owner, you'll likely never wear out an RV tire. Time out yes, wear out no. We just don't put the miles on that OTR trucks do.
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Old 02-17-2020, 09:23 AM   #9
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That makes sense. I'm from Canada and snowbird for 6 months and then we travel a little in Canada each summer. My round trip snowbirding is just around 5,000 miles. Just trying to prevent a blow-out and doing any damage or harm to my rig or worse.
Appreciate your knowledge.
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Old 02-17-2020, 09:25 AM   #10
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i find it hard to believe that there is an issue of blowing tires all the time if you have 'G' rated tires. and further, remember that regardless of miles you should be looking at new tires every 4-6 years.
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