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Tire question

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Old Aug 22, 2019 | 10:27 AM
  #1  
Fullmonte77's Avatar
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From: Kylertown,PA
Car: 85 Berlinetta
Engine: 350
Transmission: T5
Axle/Gears: 10 bolt 3.42 with Torsen posi
Tire question

Looking for new tires for my 85. I have vette C5 wheels 17x8.5 front and 18x9.5 rear. This car will be a weekend warrior and maybe 2 times a year it will be autocrossed. I know for autocross you should run a 200 tread wear tire. I'm just getting into this sport and don't really want to break the bank on tires that will not last very long driving on the street. Maybe down the road I will have dedicated track tires but for now would something in the 300-400 tread wear range work ok? The car is just pretty much stock with a 305 and auto tranny. It does have a posi and rear disc brakes and will have LS1 front brakes.
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Old Aug 22, 2019 | 11:37 AM
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Tire question

Personally, I would suggest a set of track only tires. Track tires are not designed for street use and street tires are not very good at the track. Autocross is no different than oval or drag racing. Each needs to have a set of dedicated tires for best performance.

Your 300-400 tread wear tires will probably work but if you're spinning or sliding and lose a race, you'll understand why better equipment should be used.
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Old Aug 22, 2019 | 12:00 PM
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From: Kylertown,PA
Car: 85 Berlinetta
Engine: 350
Transmission: T5
Axle/Gears: 10 bolt 3.42 with Torsen posi
Re: Tire question

Originally Posted by AlkyIROC
Personally, I would suggest a set of track only tires. Track tires are not designed for street use and street tires are not very good at the track. Autocross is no different than oval or drag racing. Each needs to have a set of dedicated tires for best performance.

Your 300-400 tread wear tires will probably work but if you're spinning or sliding and lose a race, you'll understand why better equipment should be used.
I'm not worried about winning or losing a race. I'm doing this strictly for fun. If I had the money I would definitely buy dedicated track tires but I don't.
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Old Aug 22, 2019 | 04:17 PM
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Re: Tire question

If the car doesn't see any sub-freezing temperatures than I would suggest a summer only set of tires. Usually you can buy those kind of tires in a lower treadware rating. If it doesn't get driven in the summer it probably isn't your daily driver so they end up lasting a few years to where the rubber is hardening.
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Old Aug 22, 2019 | 06:15 PM
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From: Kylertown,PA
Car: 85 Berlinetta
Engine: 350
Transmission: T5
Axle/Gears: 10 bolt 3.42 with Torsen posi
Re: Tire question

It is a summer only car. The heater and a/c box have been removed by one of the previous owners.
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Old Aug 22, 2019 | 11:22 PM
  #6  
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Car: 1989 Firebird GTA
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Re: Tire question

Nitto nt01 305 35 x 18 rear 275 40 x17 front
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