Tire Size Track Time? - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 05-22-2007, 05:49 AM Thread Starter
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Tire Size Track Time?

How much of a difference at the track will I notice going from a stock tire to a 315/70. I know it will make a difference but how much? Maybe just add more power to make up the difference

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #2 of 10 Old 05-22-2007, 06:02 AM
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what is the height difference?

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post #3 of 10 Old 05-22-2007, 06:08 AM Thread Starter
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32" stock vs 35" 315

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #4 of 10 Old 05-22-2007, 06:33 AM
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it will give you more on the big end. it might help you on not spinning so bad. they can hurt you though, due to the weight and height

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post #5 of 10 Old 05-22-2007, 07:06 AM
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My 35's hurt me by about 0.5 -1.0 seconds in the 1/4 (estimated). If your 4wd, I would run stock tires at the track. Your able to spool and launch at nearly red-line b/c of the traction. Lauching in 2wd at anything over 1500rpms = no more rear tires and crappy times!!! LOL. I didn't goto 4wd on my first run and spun the tires through 1st and 2nd gear, 1/2 way down the track...cut a 18.989 at like 76 mph. 4wd ownes at the track!


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post #6 of 10 Old 05-22-2007, 07:42 AM
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You may lose alittle bit,but now you can launch at a higher rpm.

I would brake it up to 2100rpm's and run your tire pressure at 38-40psi.

I have 295's BFG's on my truck and I can pull 1.75..60's on NOS and 1.82's without so you will be fine.You just need to practice:burnout
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Originally Posted by cj41foley View Post
How much of a difference at the track will I notice going from a stock tire to a 315/70. I know it will make a difference but how much? Maybe just add more power to make up the difference
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post #7 of 10 Old 05-22-2007, 08:07 AM Thread Starter
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well I'm only 2wd, thought if I could get them to fit the taller and wider tread might help me not spin to bad.

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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post #8 of 10 Old 05-22-2007, 08:11 AM
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Sorry I wasn't paying attention that you are 2wd.
If you are pulling 1.89 with a 2wd that pretty dang good.
The taller and wider tire will help just play with tire pressure some to help with traction
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Originally Posted by cj41foley View Post
well I'm only 2wd, thought if I could get them to fit the taller and wider tread might help me not spin to bad.
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post #9 of 10 Old 05-22-2007, 08:11 AM
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I'm runnin 33's but I have 4wd and a different motor. I'm cuttin 2.0 60's and you're doing better then that with your 2wd lol...

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post #10 of 10 Old 05-22-2007, 08:24 AM Thread Starter
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yeah it will put you back in the seat pretty good when I take off at the track :burnout

Jason
2006 F250 2wd 6.0 psd, 8.96 1/8th mile with canned SCT tunes, now running Spartan Hybrid Race tune! AFE Stage 2 PRO DRY S, 4" turbo back str8 pipe in front of rear tire, auto, crew cab short bed, ZOO DAD mod, 5% tint over the factory tint.
Track Times!
Reaction---.674
60 ft-------1.892
594 ft------8.370
1/8th ET---8.965
1/8th MPH--75.63
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