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Discussion Starter · #1 ·
Am a complete novice at all this but was wondering what the difference is when you see a tire size described as (32"x11.5"R15) vs. (265/75/16). Thanks to all in advance.
 

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Well first of all the 32x11.50R15 is for a 15" rim and the 265/75R16 is for a 16"rim. The 265/75R16 will also cost a little bit more and also have a little less width than the 32x11.50... other than that I am pretty sure they are near the same diameter... hope that helped some
 

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Portman said:
Am a complete novice at all this but was wondering what the difference is when you see a tire size described as (32"x11.5"R15) vs. (265/75/16). Thanks to all in advance.
Besides the fact that the 32 is a height in inches and the 265 is the width in millimeters?

Or the fact that they are for different wheel sizes?

Or the fact that the 32 is wider on a given rim?

http://www.goodyeartires.com/kyt/readingATire/
 

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One is a metric size and the other is a standard size. Overall the tire is about the same size depending on the style and brand. There might be a tenth or so inch difference in the size, but basically the same.

The biggest difference is the last number on the end 15 & 16. This is the size of the rim in length.

I will use 31 x 10.5 r15 vs. 265/70/r16 as an example;

Both tires are roughly the same size, about 30.7 inches (rarely is a "31-inch" tire a true "31-inch")

The biggest difference is the rim size 15" vs. 16". The advantages of say a 15 X 8" rim over say a 16 x 7" rim is the selection of tires you can get and the price.
 

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I am using my stock steel rims and a stock lift. The biggest size tire I can safely put on my rig is 275/70/16. The tire that came with it is a 265/70/16. I have yet to find a mud-terrain in any of these sizes. If I wanted to get mud-terrain that has the same size tire as the metrics I would have to get a 15" rim.

In fact, the only respectable tires I can get in thes sizes are the Bridgestone Revo All-Terrain and the BF Goodrich All-Terrain. If I wanted to get a mud tire I would have to go down a size and get 245/75/r16 which is a narrower and slightly smaller tire or if I got a little bit more clearance a 265/75/16 ( which in my humble opinion is an ideal size for most all tacoma wheelers).
 

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Discussion Starter · #6 ·
Thanks to all, I just used those as examples. I just needed to know that one was a metric measurement and the other was in inches. Would some 32"x11.5" fit on stock rims after a full OME lift kit. I'd be going iwth the 881 or 882's . . . both give just over a 2.25-5" lift. Thanks again everyone.
 

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Dont forget that most standard sizes are LT rated while most metric tires are P rated. LT's have a heavier load rating than P's.
 

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stevet47 said:
Dont forget that most standard sizes are LT rated while most metric tires are P rated. LT's have a heavier load rating than P's.
Most? All the tires I've had in metric have had higher load ratings than equivalent standard sizes...
 

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BF GoodRich All-Terrain Max Load

275/70QR16 119/116Q D 3000 lbs.265/75 SR16 120S SL 3042 lbs.

31X10.5 QR15 109Q C 2250 lbs.32X11.5 QR15 113Q C 2535 lbs.

33X9.5 QR15 113Q C 2535 lbs.33X10.5 QR15 114Q C 2600 lbs.

33X12.5 QR15 108Q C 2205 lbs.35X12.5 QR15 113Q C 2535 lbs.

Looks like MudFerret may have a point. I never even thought about it.
 

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Shocker: stay away from the bfg all-terrains. I run bfg mudterrains and the performance of these kicks the allterrains ass. I also get about 30% more mileage life from the mudders. I wheel on hard ass rocks in AZ and the mudders stand up to the abuse MUCH better. I don't know why but the mudders work much better on all surfaces i hit, except snow, they REALLY suck in snow.
 

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well then, i guess i am wrong...from my experiences LT's have higher load ranges than P's, and that would make sence, I guess it depends on the tires. If it matters, I mainly have experience with Goodyears and Dunlops.
 
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