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Discussion Starter #1
Well was happy when I bought my FJ since it had new tires when I was washing them I noticed they were 255-70-17s but my trailer is around 3800 lbs my question is will this be safe or do I need wider tires as I do have a lift. Curious if 285s are safer then the 255s for towing the load is the same as the stock 265s.

Thanks

Randy
 

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What's the load rating?
 

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Discussion Starter #3
Tires are marked with 110.

Thanks

Randy
 

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Discussion Starter #5
Thanks the tire info is P255-70R-17 110S M&S

DOT W2ND

T16

Max load 2337 lbs

Randy
 

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I pull an AT Horizon with 255/85-R16s all the way around (BFG KM2's). No problems at all.

 

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Hey Randy,
The 110 is the Load Index Rating. And as you wrote above, they have a maximum of 2337lbs per tire at 42psi as per the ETRTO Standards.
The 265/70/17 Bridgestone Dueler H/Ls that came with my FJ have a Load Index of 113, 2536lbs per tire at 42psi.
The difference in maximum load per tire between your 255s and the stock 265s is only 199lbs.
Towing 3800lbs should be fine. I wouldn't tow at the maximum towing and payload for our vehicles but for short trips a couple times a month you should be fine.
If you are going to be towing often you might want to go for a tire with a higher index rating.
If you want to stay 255, cnynrat's 255/85/16 has a load index of 123, 3418lbs per tire. Something like that (255/80/17 for your size rim) would give you the tall and skinny of the 33"x10" tire with a larger load index.
If you want to go wider, like a 285, or even back to the stock 265, you can get something that will be much better performing tire overall for towing and both on and off-road travel.

:cheers:
 

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Im sure your tire question has been answered but on another topic you may want to consider a transmission cooler depending on your set up etc. Easy to do and may save you thousands. IMHO
 

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Discussion Starter #10
Thanks guys, so looks like the tires will be fine for pulling my 3400 lb dry tandem travel trailer can you tell me about the trans cooler I thought the AT in these FJs were pretty tough?

Thanks again

Randy
 
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