Gas Mileage and tire size

I have the 5100s on the top setting, 1 in rear block, Sumo bump stops on all 4 corners. 285/70/17 TOYO AT3s SL rated on OEM 4Runner SEMA wheels which is a nice light combo. No rubbing, no cutting no vibrations, no issues and still running factory mud guards. The truck is currently on a Blackhawk 2 tune and calibrated with a RC in line calibrator. I get about 17 to 18 on a daily average and on a road trip to NC I was seeing 21 to almost 22. This is confirmed with the old fashioned way of calculating mileage. I see no power loss and at one time I was fighting going to 285s. Best move I did for looks, ride and overall happiness!

 

@VaToy kinda digressing from OP's question but how's the 5100 riding on top setting? I have the same setup but have been too lazy to adjust the clip and have also heard it rides "rougher". It would be good to hear from someone who is actually riding on the highest settings.

 

no different than before but I went from the older toyos 265s to the new At3 and personally I think it rides smoother because of the tires. Rides like my cousins 23 Pro and my other relative has a 2023 trail with the 6112s. I think the 5100s are a slight better ride than the 6112s with the different coils. I’m happy with them

 

Thanks for the insight. I’m assuming you’re running on stock coils too which the 5100s are designed for. I might have to get out the tools this weekend then

 

Yes stock coils