What's it going to take to get traction ???
Nov 25, 2003 | 07:31 PM
#1
Thread Starter
TECH Addict
Joined: Feb 2003
Posts: 2,864
Likes: 1
From: Geneseo, NY
What's it going to take to get traction ???
I have recently switched from 245/75-16's to 285-50-20's...the new combo is over 20lbs heavier than the old one and is 1.2" taller as well...with the old combo traction was non-existant !!, 300' burnouts were normal, I could bark the tires HARD on the 1-2 shift EVERY TIME, stop signs were an excercise in frustration and from a 25mph roll in first I could spin them all the way into second gear !!!
I can STILL turn the tires over for 100' or better from a dead stop by stalling the coverter and stepping off the brake !! this IS less than before but still a LOOOONG smoky burnout (Which does NOTHING for tire longevity and 1/4 mile times), the 1-2 shift will still bark (although not as bad), stopsigns aren't AS bad but I can still turn them over hard (20' black stripes) just by punching the gas (no braking to stall the converter), the only thing I cant do now is spin from a roll (oh goody)
I REALLY figured that the bigger, wider, heavier tire would at least keep me from spinning on the launches and would eliminate the 1-2 shift tire slippage
so....what's it going to take to stop spinning on the launch (stalled converter...1900rpm's) ???
I can STILL turn the tires over for 100' or better from a dead stop by stalling the coverter and stepping off the brake !! this IS less than before but still a LOOOONG smoky burnout (Which does NOTHING for tire longevity and 1/4 mile times), the 1-2 shift will still bark (although not as bad), stopsigns aren't AS bad but I can still turn them over hard (20' black stripes) just by punching the gas (no braking to stall the converter), the only thing I cant do now is spin from a roll (oh goody)
I REALLY figured that the bigger, wider, heavier tire would at least keep me from spinning on the launches and would eliminate the 1-2 shift tire slippage
so....what's it going to take to stop spinning on the launch (stalled converter...1900rpm's) ???
Nov 25, 2003 | 10:43 PM
#3
put it in 4 wheel drive 
What stall is your converter again? With a 4x4's stiff suspension -especially on a 2500 truck, it is difficult to get the thing to squat on takeoffs. I would say take out a leaf in the rear, but I still don't think this will help you squat too much. Doing this may also cause some axle wrap that you would have to get tracion bars to help out with.
I have looked at some 4x4 truck videos of diesels running in the low 12 high 11 ets and I notice they all have some monster tires to stave traction loss from their very high torque motors.
What stall is your converter again? With a 4x4's stiff suspension -especially on a 2500 truck, it is difficult to get the thing to squat on takeoffs. I would say take out a leaf in the rear, but I still don't think this will help you squat too much. Doing this may also cause some axle wrap that you would have to get tracion bars to help out with.
I have looked at some 4x4 truck videos of diesels running in the low 12 high 11 ets and I notice they all have some monster tires to stave traction loss from their very high torque motors.
Nov 25, 2003 | 11:07 PM
#6
12 Second Truck Club
Joined: Oct 2002
Posts: 1,677
Likes: 0
From: Salt Lake City, Utah
20's arent the best for traction because of no sidewall flex.
Does your truck have a sway bar on the front? You could take that off for better weight transfer. Maybe softer rear springs? Maybe relocate the battery to the bed?
Does your truck have a sway bar on the front? You could take that off for better weight transfer. Maybe softer rear springs? Maybe relocate the battery to the bed?
