09-09-2013, 06:46 PM | #1 |
Drives: 2010 2SS M6 Join Date: Jan 2013
Location: Texas
Posts: 115
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My experience at Discount Tire
So, today I went into discount tire to get a simple estimate for two new front tires.
I'm currently running Pirelli's 265/30ZR22 in front and 315/25ZR22 on the rear. Rims are TSW Doningtons with a 22x9.5 in front and a 22x10.5 on the rear. The guy comes out and inspects my car, and tells me the tires I have on there right now aren't for my car. He claimed they didn't support the weight of my vehicle? It seemed like he didn't want to just sell me the two front tires. He recommended that I went with a whole new pair of four Pirelli's with a 255/35ZR22 in front and a 305/30ZR22 in back for a grand total of $1940. What do you all think? Does this guy know what he's talking about? I've seen multiple people on here running the same size front and rear tires as I am.
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09-09-2013, 06:50 PM | #2 |
The Mark of Excellence
Drives: 2010 ABM 1SS RS LS3 Join Date: Jan 2009
Location: Smallest State in the Union
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The name of the shop says it all, he is discounting your set up. Move on.
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09-09-2013, 07:46 PM | #3 |
Master of All Things
Drives: '20 Corvette Stingray Join Date: Jul 2009
Location: Southeast of Houston, Texas
Posts: 22,292
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you discount tire guy didn't know his A$$ from a hole in the ground. your current fronts are rated at a max of 1605 lbs EACH and your rears are rated at a max of 1819 lbs EACH.
so a total of 5848 lbs load carrying capacity.....seeing as how your factory curb weight is 3860 lbs.....your current tire set up is only using 66% of its capacity......which is WAY inside the safety margin.
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09-09-2013, 11:56 PM | #4 |
Drives: 2010 2SS M6 Join Date: Jan 2013
Location: Texas
Posts: 115
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Thanks for the input guys. Can't wait to go back there now.
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TSP 231/236 cam, Kooks longtube headers w/ hi-flow cats + cat-back, Roto-Fab CAI
YouTube - https://www.youtube.com/user/svtheman95 |
09-10-2013, 12:22 AM | #5 |
Drives: 2011 2SS/RS M6 VR Join Date: Aug 2011
Location: Chicagoland
Posts: 1,536
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He's telling you that because a 245/45-20 Pirelli that is stock on the front Camaro is rated at 1929 lbs. Based on those specs, technically your tire is underated based on what GM provided from the factory.
And weight of the vehicle doesn't determine the load rating that tires should be. Weight shifts around as you drive, stop, etc. Saying your car weighs 3860 and the tires are only using 66% of the total capacity is not the proper way to size the tire. Try going 100 MPH and standing on the brakes, a lot more than half the weight of the car will shift to the front tires. Just because someone does it on the Internet doesn't make it correct. The guy at DT is CYA because your tires are not rated for the load the manufacturer states. If he knowingly sells you a set of tires not rated for your car and you go out and have a blowout while you're hot rodding it, you'll probably sue his ass because he doesn't know his ass from a hole in the ground?? Now, will your tires blow out because they aren't at the right spec? Probably not unless you're out racing on them. My wife's cousin many decades ago was in a really bad accident because his performance car came with tires not rated for the speed the car was capable of. He was left messed up physically and mentally. His family sued and won. He is the reason that tires now come with speed ratings.
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09-10-2013, 04:02 PM | #6 | |
Drives: 2010 2SS M6 Join Date: Jan 2013
Location: Texas
Posts: 115
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Quote:
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TSP 231/236 cam, Kooks longtube headers w/ hi-flow cats + cat-back, Roto-Fab CAI
YouTube - https://www.youtube.com/user/svtheman95 |
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09-10-2013, 06:50 PM | #7 |
ZL1 Dreamin
Drives: 1967 Camaro, 2010 2SS (RIP) Join Date: Oct 2008
Location: Cut N Shoot Texas
Posts: 532
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A DT guy took out the air on my 24's which said 45-55 psi to what the door said at 26 psi. I ran them like that a few days and I ruined them for riding on them that low. They said they had to put what the door said.
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