MoJ
Moderator
Thought I would post this for those trying to determine the "biggest tire they can put on a stock 80". My tech knowledge is limited ( ) but wanted to contribute to this board what I could on the very commonly asked question of tire size.
My experiences with testing these over the past day:
1. BFG A/T KO 305/70 r16 = 32.8 x 12 inches (same diameter as a 285 but .8 inches wider). Anyone know BFG A/T & M/T now come with a 2-year free extraction if you get stuck? (a few exclusions of course).
2. On-road & highway performance - No big difference that I can tell, possibly a bit more tendency for the vehicle to want to wander. Fix for this? I perceive more effort to stop when braking. Obviously the speedometer is now inaccurate and I'll be ordering Slee's correction gear (more to help with shift points than anything).
3. Off-road. Tires were great for my rocky/sandy neighborhood quarry. Haven't tried them in the mud (as I hate it). Past experience with BFG on other trucks hasn't been a problem in the mud though.
4. Off-road RUBBING? I tried pretty hard to get them to rub but didn't experience it. I stuffed a rear & front tire on a few different obstacles. Tried to max it out with front wheels straight as well as turned. No problema.
Conclusion:
Tires seem to satisfy my needs and through close-to-max articulation did not rub although I'm sure there's always a more extreme situation a cruiser could be in. I wouldn't want to go with anything wider, that's for sure. However, some have had success with 295/75 (taller but narrower) on a stock 80. Here's a link to that thread below. Highway performance didn't seem to be a problem. Pictures to follow with this thread as fast as I can post them.
295/75 post for reference (credit where do of course )
https://forum.ih8mud.com/index.php?board=2;action=display;threadid=11871;start=msg113910#msg113910
Note: BFG A/T KO 305/70 may differ in size from another tire manufacturer's 305/70 tire or differ from a M/T-type tire.
-Jason
My experiences with testing these over the past day:
1. BFG A/T KO 305/70 r16 = 32.8 x 12 inches (same diameter as a 285 but .8 inches wider). Anyone know BFG A/T & M/T now come with a 2-year free extraction if you get stuck? (a few exclusions of course).
2. On-road & highway performance - No big difference that I can tell, possibly a bit more tendency for the vehicle to want to wander. Fix for this? I perceive more effort to stop when braking. Obviously the speedometer is now inaccurate and I'll be ordering Slee's correction gear (more to help with shift points than anything).
3. Off-road. Tires were great for my rocky/sandy neighborhood quarry. Haven't tried them in the mud (as I hate it). Past experience with BFG on other trucks hasn't been a problem in the mud though.
4. Off-road RUBBING? I tried pretty hard to get them to rub but didn't experience it. I stuffed a rear & front tire on a few different obstacles. Tried to max it out with front wheels straight as well as turned. No problema.
Conclusion:
Tires seem to satisfy my needs and through close-to-max articulation did not rub although I'm sure there's always a more extreme situation a cruiser could be in. I wouldn't want to go with anything wider, that's for sure. However, some have had success with 295/75 (taller but narrower) on a stock 80. Here's a link to that thread below. Highway performance didn't seem to be a problem. Pictures to follow with this thread as fast as I can post them.
295/75 post for reference (credit where do of course )
https://forum.ih8mud.com/index.php?board=2;action=display;threadid=11871;start=msg113910#msg113910
Note: BFG A/T KO 305/70 may differ in size from another tire manufacturer's 305/70 tire or differ from a M/T-type tire.
-Jason
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