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Old 10-25-2012, 05:22 PM   #1 (permalink)
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Tire Pressure

I recently bought a 2012 Double Cab Toyota Tundra it came from the factory with 20 inch rims and BF Goodrich All Terrain T/A KO tires LT 285/55R20. My tire light went off and I noticed a sticker was placed over another sticker from the factory of my trucks PSI. It looks like it had some different tires on it then they changed them to 20 inch and the BF Goodrich tires. Anyways it has listed that my PSI is 49. Which I thought was insane of a number for tires. I'm afraid the cent of these tires will go bald in a year. Anyone else had their Tundra saying your tires need to be at 49 and if they are what have you done did you keep it there or lower it?
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Old 10-25-2012, 06:18 PM   #2 (permalink)
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According to the manual, the largest tire offered on the 2012 is a 275/55/20 with a recommended pressure of 30 psi front/33 psi rear. It sounds like they replaced the tires for some reason and also replaced the sticker. Either way, 49 psi sound way too high. The max pressure on that tire is 65 psi. I would send an email off to BF Goodrich with your vehicle information and ask them what they recommend for tire pressure. I did that with my Terra Grapplers and Nitto responded within 1 hour.
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Old 10-25-2012, 09:20 PM   #3 (permalink)
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yourmom.
If those tires are load range E, and you can see that if you read the side of the tire, it can accomodate a higher pressure.
Maximum inflation pressure can also be determined by reading the side of the tire.

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Last edited by stevj; 10-25-2012 at 09:23 PM.
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Old 10-26-2012, 11:31 AM   #4 (permalink)
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That's crazy that the manual says that. but The style of rims and tires come with the TSS edition so there are a lot of trucks in my area with the same tires and rims from the factory. I guess the texans feel a need to supersize them lol. Anyways I took your advice and emailed bf Goodrich

the inflation pressure the factory installed on your BFGoodrich All Terrain T/A KO tires is correct. Because your vehicle came original with the P255/ 70R18 tires, the inflation pressure for the LT285/55/20 needs to be inflated higher to carry the same amount of weight.

So there we have it. Thanks for the help guys

Last edited by yourmom; 11-15-2012 at 12:00 PM. Reason: Mis information
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Old 11-12-2012, 01:00 PM   #5 (permalink)
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Quote:
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I recently bought a 2012 Double Cab Toyota Tundra it came from the factory with 20 inch rims and BF Goodrich All Terrain T/A KO tires LT 285/55R20.
interesting that it came from the factory this way - zero rubs either eh?
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Old 11-12-2012, 04:37 PM   #6 (permalink)
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interesting that it came from the factory this way - zero rubs either eh?
Do what?
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Old 11-12-2012, 04:40 PM   #7 (permalink)
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the tires - they didnt rub? thats bigger than toyota offers from the factory typically.
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Old 11-12-2012, 04:48 PM   #8 (permalink)
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Oh no they don't not even when turning. I do apologize though I interpretted what all the information says. The Truck was built at the Toyota Plant in San Antonio, TX but the addition of the tires and rims and all that was done one it reached the Gulf States Toyota distributors.
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Old 11-12-2012, 04:51 PM   #9 (permalink)
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nice! so no rub even at full lock, while going uphill or down?
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Old 11-12-2012, 04:55 PM   #10 (permalink)
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Correct I've gone full lock in it going up hill and multiple times on flat ground with no rub but I haven't going down hill yet but yes no rub even then. I've been completely surprised by it not rubbing at all with turns.
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Old 11-12-2012, 05:10 PM   #11 (permalink)
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welp - i basically need to buy these now. lol.
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2012 Platinum Crewmax 4x4 Mag Grey/ Red Rock. 20x9 XD Monster, 285/55/r20 BF Goody AT, Bakflip F1, stubby antenna, nav override switch, oem rubber mats.

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2010 TRD SR5 Crewmax 4x4 White/grey. 6" pro comp st 2, 20" XD Hoss, 35" Terra Grappler, volant, custom flow 50 exhaust, line-x, remote start, trd sway, factory tonneau: SOLD

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Old 11-12-2012, 05:18 PM   #12 (permalink)
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If you've got a Texas Edition Tundra my guess is that you actually have BFG Rugged Terrains, not All Terrains. I certainly could be wrong but I haven't seen any Tundras with AT's from the dealer. In any case, the 285/55/20 is only slightly larger than 32in and there should be no problem whatsoever on these. Most can fit 275/60/20's (a 33in tire) with no lift. I second the recommendation to call BFG. I did when I stepped up to a 275/65/20 (34in) and wanted to know what pressures to run. Answered my question over the phone. FWIW, the 34's (E-rated) had a recommended pressure of 45psi front and rear so the 49psi does sound a little high to me.
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Old 11-12-2012, 05:40 PM   #13 (permalink)
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btw - do you have any pics of your truck with the stockers and these tires on?
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Old 11-12-2012, 05:50 PM   #14 (permalink)
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Sure do.
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Old 11-12-2012, 06:52 PM   #15 (permalink)
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thanks! i was actually hoping your mom (sn, not YOUR mom, you know what i mean!) would post some pics of his DC with the A/T 285/55R20's
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FOR SALE

2010 TRD SR5 Crewmax 4x4 White/grey. 6" pro comp st 2, 20" XD Hoss, 35" Terra Grappler, volant, custom flow 50 exhaust, line-x, remote start, trd sway, factory tonneau: SOLD

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