slicks / drag radial with with 4th gen rear
04-24-2018, 09:20 AM
#1
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
slicks / drag radial with with 4th gen rear
Guys running 4th gen rear ends, what is the widest tire and rim/backspace combo you guys are getting away with?
I wanna run a 24-25" tire.
-- Joe
I wanna run a 24-25" tire.
-- Joe
04-24-2018, 11:22 AM
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: slicks / drag radial with with 4th gen rear
So you ran 7.25" bs 10" rim on a 4th gen rear? Hrmm.
Even a 26" tire would have me crossing the finish line I think way under max RPM.
Hrmm..
-- Joe
04-24-2018, 11:36 AM
#4
Re: slicks / drag radial with with 4th gen rear
Idk any small diameter sizes. Stock is 25.7 I believe
The 15x10 is a race star 92. 7.25 bs. With the 275/60 radial pro drag tire its even with the fender lip and has a 1/2” clearance on the lower front corner of the well and several inches from inner frame rail
You can do a 255/50/16 on a stocker wheel. Or 245/50/15, or maybe something in 275/50/15 which would be 26 and live with the rpm disadvantage. For the street i would take some sidewall height
The 15x10 is a race star 92. 7.25 bs. With the 275/60 radial pro drag tire its even with the fender lip and has a 1/2” clearance on the lower front corner of the well and several inches from inner frame rail
You can do a 255/50/16 on a stocker wheel. Or 245/50/15, or maybe something in 275/50/15 which would be 26 and live with the rpm disadvantage. For the street i would take some sidewall height
04-24-2018, 11:57 AM
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Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: slicks / drag radial with with 4th gen rear
Small tire is a step backwards for traction. Less rubber on the ground to give traction.
Tallest tire possible (typically 28" with no inner fender modifications. 8-10" of tread is fine.
A 10" slick has 10" of tire making contact with the ground. A 10" DOT tire has a little less than 8" of tire making contact with the ground.
Tallest tire possible (typically 28" with no inner fender modifications. 8-10" of tread is fine.
A 10" slick has 10" of tire making contact with the ground. A 10" DOT tire has a little less than 8" of tire making contact with the ground.
04-24-2018, 12:07 PM
#6
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
Re: slicks / drag radial with with 4th gen rear
Small tire is a step backwards for traction. Less rubber on the ground to give traction.
Tallest tire possible (typically 28" with no inner fender modifications. 8-10" of tread is fine.
A 10" slick has 10" of tire making contact with the ground. A 10" DOT tire has a little less than 8" of tire making contact with the ground.
Tallest tire possible (typically 28" with no inner fender modifications. 8-10" of tread is fine.
A 10" slick has 10" of tire making contact with the ground. A 10" DOT tire has a little less than 8" of tire making contact with the ground.
However, I guess if I go crazy with the car next season and do end up tossing a bar in it, to make it 10.0 legal I'd have to do aftermarket axles and retention anyway, so maybe re-address the tire size and gear ratio then.
Maybe for now just some sticky radials on stock rims for this year and see if the car warrants further modification over the winter..
-- Joe
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