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Old 03-30-2019, 09:48 PM   #1
Winnebago Watcher
Join Date: Mar 2019
Posts: 1
Using tow vehicle's spare on a trailer?

Hi all,

I'm new to this forum and new to the RV world. We just got a 2019 Minnie Drop 190BH, tow vehicle is an old Chevy Trailblazer. We've gone out on a few short trips, and looking forward to more this summer.

We currently have a spare for the trailer mounted to the trailer's rear bumper. I'd like to save the weight and space (maybe mount a bike rack back there) but don't like the idea of traveling without a spare.

Could we use the tow vehicle spare tire on the trailer, if the need arises? Until we could replace the trailer tire with a proper one? The tire specs are not a match - TV is 245/65R17, trailer is 235/75R15. That makes the TV tires about 0.6" larger in diameter. If I'm out in the sticks and need to drive 100 miles like this to get a proper spare, will I damage anything?

Thanks for your input.

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Old 03-31-2019, 12:40 AM   #2
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Join Date: Mar 2019
Location: South Bend, WA
Posts: 1,438
Hi Eric,
As long as the bolt hole pattern matches, the lug nuts mate to the other rim well, and the rim offset keeps the Suburban Spare safely within the wheel well of the trailer, it sounds fine to me. Just try mounting it and take it for a spin around the block.
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