No Lift tire size guide (work in progress)
4wd Low
Joined: Oct 2008
Posts: 12
Likes: 3
Mickey Thompson Baja Boss A/T LT275/55R20 - LT rub & ride
Can anyone confirm that the "LT" version mounted on 20" factory rims, air suspension, does not rub at any ride height? How is the ride? The LT version has thicker sidwall lugs and stiffer sidewalls...thanks
Mudding
Joined: Nov 2006
Posts: 193
Likes: 66
From: Tacoma Wa
That's a strange chart considering that the BFG ko3 is currently available in E load range 265/60-20 but not on that chart. I have a set and it's the max/ideal size for my RR SV AB with some front fender liner fuss. I bet it would fit perfectly fine on the Defender with no mods whatsoever on a factory wheel like the 20x8.5 but maybe not as well on a 20x9.5 and/or wider offset.
Last edited by jwest; Oct 20, 2025 at 12:51 AM. Reason: typos
Mudding
Joined: Nov 2006
Posts: 193
Likes: 66
From: Tacoma Wa
After 50k miles, my General Grabber X3s are toast. Worn out and chunked up from many miles offroad. I tried to get the same tires as I have been happy with then, but General is no longer making them.
I went with 275/65 r18 BFG KM3s on stock steelies on my P300. I was happy with the KM2s on my P38 Range Rover and wore those down to nothing. So far, they seem to clear on access mode butnI haven't tested them on full articulation yet. A bit of rub at full stuff, I can live with.
I'm headed to the Continental Divide Trail next month for a week of trails where they will be tested.
I went with 275/65 r18 BFG KM3s on stock steelies on my P300. I was happy with the KM2s on my P38 Range Rover and wore those down to nothing. So far, they seem to clear on access mode butnI haven't tested them on full articulation yet. A bit of rub at full stuff, I can live with.
I'm headed to the Continental Divide Trail next month for a week of trails where they will be tested.
Mudding
Joined: Nov 2006
Posts: 193
Likes: 66
From: Tacoma Wa
That is really the sweet spot size. I have it on my RR SV AB and had to adjust the front edge of the fender liner but otherwise its perfect. I imagine the L663's have just a bit more clearance that makes these the perfect no-fuss choice. Mine are even on wider offset Iconisus 20x9.5 but the factory 20x8.5 with narrower offset would require no adjustments at all.
That's a strange chart considering that the BFG ko3 is currently available in E load range 265/60-20 but not on that chart. I have a set and it's the max/ideal size for my RR SV AB with some front fender liner fuss. I bet it would fit perfectly fine on the Defender with no mods whatsoever on a factory wheel like the 20x8.5 but maybe not as well on a 20x9.5 and/or wider offset.
Mudding
Joined: Apr 2021
Posts: 122
Likes: 74
That is really the sweet spot size. I have it on my RR SV AB and had to adjust the front edge of the fender liner but otherwise its perfect. I imagine the L663's have just a bit more clearance that makes these the perfect no-fuss choice. Mine are even on wider offset Iconisus 20x9.5 but the factory 20x8.5 with narrower offset would require no adjustments at all.
4wd Low
Joined: Oct 2008
Posts: 12
Likes: 3
Mickey Thompson- Baja Boss A/T "XL" on 20"
P400 Dynamic X - installed 275/55/20 "XL" version on OEM 20 " wheels. I chose to go with the lighter tire option vs the LT. Snow performance, moderate offroad, light towing (offroad gear hauler), noise were prioritized. No rub at all ride heights. First impressions: Looks great, aggressive. Handling seems slightly softer than the OEM Wranglers, though, the wranglers had 48K on them. Ride quality on air suspension is very good. Slight vibration in steering wheel on certain surfaces, feels more like the aggresive tread than balancing. Noticable road noise at 55-60, but still quiet. Roof rack wind noise is more noticable at higher speeds.