[Z06] Inside tire wear.
Thread Starter
Pro
Joined: Feb 2012
Posts: 613
Likes: 8
From: Lees Summit Missouri
Inside tire wear.
Had the front tires off today to do some caliper painting and saw the insides are getting wore down fast. Cars lowered on stock bolts and previous owner had it aligned. Running 32 psi on 295/30 19 hankook ventus. Rears I just replaced, and they wore evenly. Should I stop in for a quick front end alignment?
Melting Slicks
Joined: Jul 2010
Posts: 3,355
Likes: 113
From: Los Angeles
Yeah, sounds like you should have your alignment checked if you want to maximize your tire life. Google "pfadt corvette alignment" - their basic Performance Street specs are a good guide. And you might as well have the rear checked too, while your car is on the rack.
Melting Slicks
Joined: Jul 2010
Posts: 3,355
Likes: 113
From: Los Angeles
I think you'd have to be a little 
to drive with them that high. OEM spec is 30. Some tires like a little more, some like a little less, but NO tire for our car likes 40-45. 
Thread Starter
Pro
Joined: Feb 2012
Posts: 613
Likes: 8
From: Lees Summit Missouri
Well I'm taking a 2000 mile round trip road trip in it this weekend. Going to lower it more when I get there, so ill just wait to get a new alignment. I checked again last night and its just the very inside edge wearing. Outside looks brand new.
Race Director
Joined: Apr 2007
Posts: 18,049
Likes: 53
From: long Island NY
Normal on Z's. I run Pfadts street/track alignment and it's way worse.
Just thru away tires that looked great from outside but cording on inside. You want to handle it comes with a price. All sports cars suffer from this
Just thru away tires that looked great from outside but cording on inside. You want to handle it comes with a price. All sports cars suffer from this
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Thread Starter
Pro
Joined: Feb 2012
Posts: 613
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From: Lees Summit Missouri
Pro
Joined: May 2011
Posts: 580
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From: Chicago Suburb
St. Jude Donor '13
At least that's what I've been told by an alignment tech.
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
where are your toe and camber specs?
less than 1deg neg camber and the toe somewhere between .03 in and .00 each side up front should have virtually no tire wear unless you have worn bushings and or are driving really hard
less than 1deg neg camber and the toe somewhere between .03 in and .00 each side up front should have virtually no tire wear unless you have worn bushings and or are driving really hard
Racer
Joined: Mar 2008
Posts: 445
Likes: 0
From: Mesa AZ
If I run my tires at anything under 40PSI the car pulls all over the road and handles terribly as well.
Melting Slicks
Joined: Jul 2010
Posts: 3,355
Likes: 113
From: Los Angeles
Race Director
Joined: Jan 2008
Posts: 16,028
Likes: 170
From: oregon
Not according to every tire shop Ive been too. Ive been running low profile tires for 15 years and have always kept them at 10 under max PSI and have never had an issue. If you run 30 PSI in a low profile tire you're just asking for premature sidewall failure, bubbles and bent rims.
If I run my tires at anything under 40PSI the car pulls all over the road and handles terribly as well.
If I run my tires at anything under 40PSI the car pulls all over the road and handles terribly as well.
too much air just kills traction and reduces compliance
Melting Slicks
Joined: Sep 2006
Posts: 2,728
Likes: 142
From: Iowa
Not according to every tire shop Ive been too. Ive been running low profile tires for 15 years and have always kept them at 10 under max PSI and have never had an issue. If you run 30 PSI in a low profile tire you're just asking for premature sidewall failure, bubbles and bent rims.
If I run my tires at anything under 40PSI the car pulls all over the road and handles terribly as well.
If I run my tires at anything under 40PSI the car pulls all over the road and handles terribly as well.
I do dragracing, autocross, and DE's with my ZO6 and keep it right around 30psi, except for drag. When doing AutoX and DE's, it has just the right amount of rollover meeting the triangle exactly where it should. Traction is awesome. Tires are 30 and 35 series.
Melting Slicks
Joined: Feb 2007
Posts: 3,297
Likes: 398
From: Raleigh Suburbs
I don't know what you guys are running however factory specs tend to be on the "conservative" side. Any time you increase the level of performance you have to be ready to match components for this level. Otherwise you're asking for blasting because the factory specifications simply cannot keep up with racer demand.
Pro
Joined: Oct 2005
Posts: 680
Likes: 17
From: Moulton Alabama
Cruise-In 8-9-10-12 Veteran
I don't know what you guys are running however factory specs tend to be on the "conservative" side. Any time you increase the level of performance you have to be ready to match components for this level. Otherwise you're asking for blasting because the factory specifications simply cannot keep up with racer demand.
Racer
Joined: Mar 2008
Posts: 445
Likes: 0
From: Mesa AZ
How low of a profile are you talking about? 20-series? The Pilot Super Sports in 305/30-19 feel great with ~31 psi cold on my 10.5" wide wheels. And that's for putting around in the city as well as tearing through the canyons. One of the guys I drive with runs the same tires with ~33 psi on 10" wide wheels. America's Tire actually wanted to inflate them to 28 front/26 rear! But anything under 30 makes them feel soft while cornering hard.
I took the car in to get aligned and they said to keep then at 10 under the max or its going to pull all over the place because of the wide tires. To be honest though even if i keep them at 40 it still pulls so I think i'm going to have to take it back in when I can afford the Pfadt camber kit as the car wont go into factory caster specs because of how low it is.
Ridiculous.
I do dragracing, autocross, and DE's with my ZO6 and keep it right around 30psi, except for drag. When doing AutoX and DE's, it has just the right amount of rollover meeting the triangle exactly where it should. Traction is awesome. Tires are 30 and 35 series.
I do dragracing, autocross, and DE's with my ZO6 and keep it right around 30psi, except for drag. When doing AutoX and DE's, it has just the right amount of rollover meeting the triangle exactly where it should. Traction is awesome. Tires are 30 and 35 series.
Melting Slicks
Joined: Feb 2007
Posts: 3,297
Likes: 398
From: Raleigh Suburbs
Just saying that standard pressure settings are by design lower for street. They don't take into account balance (F/R weight distribution) or weight transfer for instance. Thus you have to compensate because otherwise the capability of the tire will be reduced.