will 31x10.50 fit on a 15X10 wheel?

bradpatt03

Senior Member
#2
i've never heard of that being done before...i have heard of the opposite being true where say a 12.50 on a 8.5" wheel works but not sure about the other way around...i would guess that it would work with no problem, though, especially being that its only a half of an inch
 
#3
I had the exact tire and rim combo on a Toyota 4x4 years ago (1993 or 4). Only problem was when turning really sharp they rubbed a fuzz.
 
#4
Yes it will work , it will just look a little funny. Since there only about a 1/4" bow on each side. I had some I did this way on an old truck I had. It works but to me it just didn't look all that good
 
#5
If you have 15" rims that are 10" wide they will work fine,
I ran that combo on my old GMC mud truck then upgraded
to 33x12.50s.....
I had plenty of room in the wheelwells because I had the
proper lift (6")....
 

Tim1

Senior Member
#6
31 X10.50 is the tire size relating to the height and width of the tire!!!!!!!!!!!!!!!!!!!!!!!! It has absolutely nothing to do with what size rim it will fit on!!!!!!! A 15 x 10 wheel means the rim is 10" wide and the diameter is 15" If you look at the tire size you will see a third number (probably) a 15 telling you that it will fit on a 15" wheel. The number on the sidewall of the tire will be something like 31/10.50R15.... The first two numbers are the tire ratio of width and height and the third number is the required rim diameter...
 
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SouthPaw Draw

GONetwork, GWF and NTWF Member
#7
Currently running 10.50's on my 94' F150 2WD with 15 wheels and no problems
 
#8
calm down tim, he is asking about the width difference, as long as the rim size is the same, then it will work just fine, even with only a quarter inch overlap, the tires may be difficult to set the bead on, and the bead may break if beat on rocks or trees, but for normal driving, bogging and trailrunning you will be fine
 
#9
calm down tim, he is asking about the width difference, as long as the rim size is the same, then it will work just fine, even with only a quarter inch overlap, the tires may be difficult to set the bead on, and the bead may break if beat on rocks or trees, but for normal driving, bogging and trailrunning you will be fine
Exactly right.
 

MOTS

Senior Member
#10
calm down tim, he is asking about the width difference, as long as the rim size is the same, then it will work just fine, even with only a quarter inch overlap, the tires may be difficult to set the bead on, and the bead may break if beat on rocks or trees, but for normal driving, bogging and trailrunning you will be fine
LOL! Tim1's about to nut up!
In other words, you'll have 10.5 inches of rubber touching the pavement(on the highway anyway), your sidewalls will be tapering from 15" to 10.5". It will be fine, but as stated earlier be careful not to be to rough or you'll blow the bead. I run BFG's 32/11.50's on 15's with my Jeep, but it's highway driving 99.5% of the time. If you are trying to save some $$, go for it, if not, step up to the 11.5's.
 

Tim1

Senior Member
#11
I am remaining very calm and not even close to nuttin up! I wanted to ensure that he knows what the measurements he gave actually apply to. Then I read these last two posts and have to wonder if you have ever sold or had to really work with tires to understand that the first two numbers in the tirre size are actually a ratio and not the actual measurement. So running a 31 X 10.50 on a whell that is 10" wide will not equate to a quarter inch overlap as stated, and the sidewall will not be tapering from 15" to 10.5". I guess I should take the years of Goodyear experiance and sit back and watch when others give guidance.
 

olroy

Senior Member
Thread starter #12
clearer

sorry guys my post may have been un clear to start with,
I have a wrangler that has 15 X10 wheels with 32x11.50x15 tires now, they are shot and I was just wanting to know if the 10.50 would fit my wheel or would it be to stretched?
 

duckbill

Senior Member
#15
I had the exact tire and rim combo on a Toyota 4x4 years ago (1993 or 4). Only problem was when turning really sharp they rubbed a fuzz.

I'm running the exact setup on my '99 Toy and it looks and fits great. BF Goodrich 31 X 10.50 - 15's on 10 x 15 rims. Mine rub the fenders just a tad on sharp corners, too. I have no lift.
 

MOTS

Senior Member
#16
I am remaining very calm and not even close to nuttin up! I wanted to ensure that he knows what the measurements he gave actually apply to. Then I read these last two posts and have to wonder if you have ever sold or had to really work with tires to understand that the first two numbers in the tirre size are actually a ratio and not the actual measurement. So running a 31 X 10.50 on a whell that is 10" wide will not equate to a quarter inch overlap as stated, and the sidewall will not be tapering from 15" to 10.5". I guess I should take the years of Goodyear experiance and sit back and watch when others give guidance.
Common sense will tell you that when the tire bead is sealed on a 15 inch rim and you have 10 1/2 inches of rubber on the ground, there will be a balloon effect from the difference. And I disagree that the numbers are a ratio, they are actual measurements, 31 inches high x 10 1/2 inch tread width.
 
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#17
15X10 WHEELS

YOU WILL HAVE LESS SIDE WALL FLEX RUNNING THAT SIZE TIRE AND WHEEL. IF RUNNING LIKE A 15X8 WHEEL YOU WILL GET A LITTLE BIT MORE FLEX IN THE SIDEWALL. I GOT A 93 JEEP WRANGLER WITH 32X11.50X15 TIRES ON 15X10 WHEELS. ALSO THE WIDER THE RIM THE SHORTER IT WILL MAKE THE TIRE NOT BY THAT MUCH THOUGH.
 
#18
Tim, i mount tires 53.5 hours a week, i have a rough idea what i am doing.

in P-Metric sizes (235/75R15), the first number is a tire tread width in MM, the second number is the ratio of width to tire sidewall height and the third "R15" number is rim size, now in standard tire sizing (31x10.50x15) the first number is overall tire diameter, the second is tire width, and the third is rim size. Many ppl get this confused. also there are online tire size calculator that will give you a rough idea of overall tire diameter from a P-metric size.
 

ATLRoach

Senior Member
#20
The orginal poster you can run a 10.5" wide tire on a 10" wide rim. It will balloon the tire out and will be easier to blow a bead if ran at a lower pressure.
 
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