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Tire question


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#1 Landabuser

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Posted 03 May 2017 - 10:31 AM

These tires are the same size, 39.5x13.50-15's. Mounted tire is on a 10 inch wide rim. Whenever I have mounted these tires up, they stand nice and tall. It seems after a couple runs, they start to squat and get fatter. Do you think an 8 inch rim would help combat this? Posted Image

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#2 Jay W

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Posted 03 May 2017 - 11:09 AM

I'm no engineer but I think switching to 17s would help the problem more than wheel width.

#3 Landabuser

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Posted 03 May 2017 - 12:35 PM

Here's what they looked like when I mounted them up 4 years ago.Posted Image

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#4 SHREK

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Posted 03 May 2017 - 03:07 PM

8" wheel should help some. I also agree with Jay about 17's.

#5 Landabuser

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Posted 04 May 2017 - 08:58 AM

This is my mounted spare. Same tire in a 17 inch on a 9 inch wide wheel, same air pressure. Obviously taller, other than its never been ran. Next round, I'll have to step everything up to 17's. Always liked 15 inch because they are so easy to sell used. Every high school kid at the swap meet wants 40's for his Toyota. Posted Image

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#6 Atkins

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Posted 04 May 2017 - 06:39 PM

Every tire takes time to "break in"  which softens the sidewalls and tread.  Hard to compare a used tire on the cruiser versus a new tire with no load.  Going to a 17 means stiff sidewalls and that sucks for snow.  

Run 42" and they will settle to your desired height.

#7 Landabuser

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Posted 05 May 2017 - 08:29 AM

View PostAtkins, on 04 May 2017 - 06:39 PM, said:

Every tire takes time to "break in"  which softens the sidewalls and tread.  Hard to compare a used tire on the cruiser versus a new tire with no load.  Going to a 17 means stiff sidewalls and that sucks for snow.  

Run 42" and they will settle to your desired height.
Good idea Atkins. When I finally get set up with two sets of W/tires, I'll get 42's for the snow.

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#8 Landabuser

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Posted 20 May 2017 - 02:05 PM

New versus old.Posted Image

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#9 Landabuser

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Posted 20 May 2017 - 02:08 PM

39.5×13.50-15 mounted on 15x10.5 rim on the left. 39.5x13.50-17 mounted on 9x17 rim on the right. Posted Image

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#10 ChevyJoe

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Posted 21 May 2017 - 12:15 AM

View PostLandabuser, on 20 May 2017 - 02:08 PM, said:

39.5×13.50-15 mounted on 15x10.5 rim on the left. 39.5x13.50-17 mounted on 9x17 rim on the right. Posted Image

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They look the same to me