Jt-wrx
Well-Known Member
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- #1
First, the jeep.
Sport S, 6-speed
Started with 315 70r17 goodyear duratracs on mickey thompson classic III's (62 lbs on 28 lbs), 4.5" back spacing on mopar lift. Averaged over 10 tanks of fuel 15.2 liters per hundred km (about 15.5 mpg), granted, winter.
Made the change to factory wheels with 37x12.50 falken mt's (82 lbs on 23 lbs), added 12mm die cast spacers to mimick wide axle max tow/rubicon width, also added 3/4" strut spacers to the front end, and just fyi...used 4 washers under drivers side steering stop to stop control arm rub, used 5 spacers under passenger side steering stop to do the same.
3 tanks of fuel over 1260 kms and i'm at 14.2 l/100 km or 16.5 mpg!
measured treadwidth of the 35's was 10.5" and i ran at about 32 psi, measured tread width of the 37's is 10" and running about 29 psi
So my theory is that even though i'm taller and heavier, the combination of less tread width and not having at least 2" of rubber sticking out into the fresh air is more important than the weight/diameter?
Anyone else have thoughts? Or similar experience?
Mine can be seen on Instagram @gladiatoryyc
Maybe tire pressure still a little too high and i'm not riding on full tread width?
Either way i feel i'm done with build, loving the heck out of this set up. Tall and skinny and saving piles on car washes as i'm poking only side wall into the fresh air. The tops of the fenders just catching the outer edge of the spray so one puddle doesn't waste $8. Loving this so much more!
Edit! Tazer JL Mini used to correct speedo to gps at 80 mph for both sets of tires so this info is valid, all is hand calculated (the computer averages 2% error fyi and usually to the 'look good side')...settings required for the 35's was 34.44 and for these 37's needed 36.45.
Sport S, 6-speed
Started with 315 70r17 goodyear duratracs on mickey thompson classic III's (62 lbs on 28 lbs), 4.5" back spacing on mopar lift. Averaged over 10 tanks of fuel 15.2 liters per hundred km (about 15.5 mpg), granted, winter.
Made the change to factory wheels with 37x12.50 falken mt's (82 lbs on 23 lbs), added 12mm die cast spacers to mimick wide axle max tow/rubicon width, also added 3/4" strut spacers to the front end, and just fyi...used 4 washers under drivers side steering stop to stop control arm rub, used 5 spacers under passenger side steering stop to do the same.
3 tanks of fuel over 1260 kms and i'm at 14.2 l/100 km or 16.5 mpg!
measured treadwidth of the 35's was 10.5" and i ran at about 32 psi, measured tread width of the 37's is 10" and running about 29 psi
So my theory is that even though i'm taller and heavier, the combination of less tread width and not having at least 2" of rubber sticking out into the fresh air is more important than the weight/diameter?
Anyone else have thoughts? Or similar experience?
Mine can be seen on Instagram @gladiatoryyc
Maybe tire pressure still a little too high and i'm not riding on full tread width?
Either way i feel i'm done with build, loving the heck out of this set up. Tall and skinny and saving piles on car washes as i'm poking only side wall into the fresh air. The tops of the fenders just catching the outer edge of the spray so one puddle doesn't waste $8. Loving this so much more!
Edit! Tazer JL Mini used to correct speedo to gps at 80 mph for both sets of tires so this info is valid, all is hand calculated (the computer averages 2% error fyi and usually to the 'look good side')...settings required for the 35's was 34.44 and for these 37's needed 36.45.
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