Correct Tire Pressure on LR4 running 275/55 R20 BFG AT KO2s

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Cole Martinez

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Recently put on some JRs and some 275/55 R20 BFG AT KO2s.

Absolutely loving the look on the LR4. So much better than the stock set up without much compromise on ride quality or noise whatsoever.

I was curious to hear what the correct PSI for front and back is for this set up and where others who run this set up keep their PSI. Information online is a bit confusing, some of it says to keep the PSI around 37 which seems really low to me.

Was hoping someone on here would have the answer already, so if so please let me know!

Thanks!

Cole
 

DaytonaRS7

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PSI should stay the same as OEM, or whatever PSI you were using before.

PSI relates to the vehicle weight, not tire size.
 

jlglr4

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If these are E rated tires, I believe recommended pressure is different. On my BFG 265/60 R18s, BFG/Michelin recommended 45 front 51 rear as equivalent to the oem tire pressure of 36/42.
 

DaytonaRS7

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If these are E rated tires, I believe recommended pressure is different. On my BFG 265/60 R18s, BFG/Michelin recommended 45 front 51 rear as equivalent to the oem tire pressure of 36/42.

this is a good point.

if the tires you purchased have a different load rating, then PSI must change. typically a little higher to compensate for the weaker sidewall.
 

portlandlife

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It is a good question and I don't know the answer, but I'd love to see a pic of your rig with the JR and 275's! On the LR, did you have to do any bending/trimming to the fender liners?

I have a 2010 RR HSE full size and just ordered JR 2" and 275/55r20 Falken Wildpeaks. I'm pretty sure I will have to do some heating/bending/cutting to a couple of the fender liners. Also was able to find a pair of OEM Sport Bars; unfortunately, these only mount to the center and front mounting points and don't fit the rear mounting points.
 

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