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1987 ford bronco
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Discussion Starter · #1 ·
On my non lifted 1987 bronco, what size tire should i get. Sticker says 235/75r15xl i want to keep the same rim size but just get something a little bigger up under it.
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1987 ford bronco
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Discussion Starter · #3 ·
Would i be able to fit 33/12.50r15 on it
 

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85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
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31x10.5 is a good fit. 32s fit well too, if they are 10.5" or narrower.

245/75/16 is what i just bought for my econoline. 31.5x9.50x16.
 

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1978 Bronco Ranger XLT, 400/C6 92 K documented miles &1994 Bronco,XLT 85K original miles
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31x10.50 are good. 32x11.50 rub on my stock 94 Bronco.
 

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I had 31/10.50/15 and now have 30/9.50/15. A little bigger than stock, but now the speedo is spot on. For towing it is great where with the 31's it lugged a little more.
So it kind of depends on what you want ad a goal.

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265/75r15 is the metric equivalent of 31s, and sometimes can be a slightly cheaper option (usually because the 31 tends to be a light truck rated tire while the 265s are passenger). For factory height, 31s are about a perfect step up from the 235s, which just doesn't seem to look right.
 

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85 Bronco, 309ci I6 w/4bbl, np435, 4" lift, 37" Irok NDs, 4.56 w/ Detroit Locker and tru trac
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265/75r15 is the metric equivalent of 31s, and sometimes can be a slightly cheaper option (usually because the 31 tends to be a light truck rated tire while the 265s are passenger). For factory height, 31s are about a perfect step up from the 235s, which just doesn't seem to look right.
Thats the metric for a 31x10.5 tire, not all 31s. 235/85-15 is a 31, as is 245/75. They are just narrower.

I would never ever put passenger car tires on. Always light truck. They last so much longer and are more durable.
 

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Would i be able to fit 33/12.50r15 on it

You can put 33's on your bronco... with some slight modification. I wanted a "beefy" look on mine... shes a '92 5.8L 351 Windsor EBE, stock, no lift, no spacers, original rims. In order to stop the rub, I had the bumper trimmed on the bottom outside corner. There was an L shaped lip that was cut straight down. (note the slight odd edge on the bottom bumper). She does not rub against the sway bar.
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Thats the metric for a 31x10.5 tire, not all 31s. 235/85-15 is a 31, as is 245/75. They are just narrower.

I would never ever put passenger car tires on. Always light truck. They last so much longer and are more durable.
Just referring to more of it being a close to comparable size in terms of height and width within about 1/2" or so when put against the typical option when referring to 31s which is the 31x10.5. I know other slight variations stay close to size, and breaking down every tire to just the basis of a true 31" diameter in general would have a lot of unnecessary running around, and that is just the variation I happen to run, which I will admit that I was a little more concrete in the way I said it, which I am sorry for having failed in that way.

I'm running Cooper AT3s, and have been fine in terms of wear. I know the LT list as a stiffer sidewall, but the passenger for these at least (not saying it holds true to all tires, but simply one example of a popular tire) actually lists higher load rating while the LT has the higher load range (more stating just for it being interesting, not to argue any point), and the passenger tires tend also carry longer tread warranties at a slightly lower price ($10 less for an extra 5,000 miles at Discount Tire price) as well.

For the everyday driver, I would stand behind the passenger tires in that size or smaller, but if you deal with more load and stress, then I would say go with the LT tires to cover that added work on the sidewalls. These are just 1/2 ton trucks, so they have their limits and tires are a little lower on the list, as long as you have a decent set, until you build up the rest to take more than they were intended, but I would agree that if I stepped over a 31 equivalent, I would go the LT route instead.

Bottom line I think we can all agree on, 235/75r15s just don't look right on our rigs :)
 
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It also depends on the width of your rim.
My Bronco had 235 75R15s and had 15x7" rims. I was able to get a 31" tire on it, when I went to 32" tires, I had to get wider rims.
 
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