Topic: Two new tires mounted on front or rear?
in Forum: C3 Engines, Driveline and Handling
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How wrong can usual practice be? This research-video by a renowned tire manufacturer proves beyond doubt that the wrong conception MUST be changed! |
corvette440hp
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Thanks Larry, make sense. Cool video, would not have thought the car would break loose at such low speed.
ebo
Lifetime MemberGreensburg, IN - USA
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Nice clip Larry......
You can only buy 2 tires? I haven't bought just 2 tires since I bought those Mickey Thompson L60's for the back of my Camaro in 1975......
You can only buy 2 tires? I haven't bought just 2 tires since I bought those Mickey Thompson L60's for the back of my Camaro in 1975......
Tux I bought three once 
Had them drop the spare, mount it with the other three and put the best old one on the spare rim. Hate to never use that brand new spare!
Had them drop the spare, mount it with the other three and put the best old one on the spare rim. Hate to never use that brand new spare!
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Can't see the video, but....
This really all depends on how bad the "other" two tires are. If they are junk, or worn, then it really doesn't matter which end you put the new ones on...the other two are still gonna be worn, and subject to boo-boos.
Another problem is mis-matching new tires with old...different brands, rubber compounds, and tread patterns can cause handling issues, too.
I'll have to check out the vid from the shop, and see what it am, but....I will continue to put the new rubber on the end that steers...
This really all depends on how bad the "other" two tires are. If they are junk, or worn, then it really doesn't matter which end you put the new ones on...the other two are still gonna be worn, and subject to boo-boos.
Another problem is mis-matching new tires with old...different brands, rubber compounds, and tread patterns can cause handling issues, too.
I'll have to check out the vid from the shop, and see what it am, but....I will continue to put the new rubber on the end that steers...
Joel Adams
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Lifetime MemberGreensburg, IN - USA
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[QUOTE=ebo] Tux I bought three once Had them drop the spare, mount it with the other three and put the best old one on the spare rim. Hate to never use that brand new spare![/QUOTE]
Spare? Whut izat?
Had them drop the spare, mount it with the other three and put the best old one on the spare rim. Hate to never use that brand new spare![/QUOTE]
Spare? Whut izat?
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Were those front or rear wheel drive cars? I have to believe that makes a difference too...
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I've always put new ones on the drive wheels. Lately I've been replacing 4 at a time.
Dave
Lifetime Member #116
Dave's '82 
Generally, the video is true. But I have some exceptions.
This is worse on a front wheel drive then a rwd. The weight of the car, end to end, makes a difference.
They made the statement the driver can feel the slippage on the front, and not the rear. A good driver and feel the rear slip.
The video with both cars on the track at the same time is a bit deceptive. The front car did not correct steering and held steady state. The rear car WAS steady state, the changed. Watch closely, the driver tweaked the steering, throwing the rear out and causing the problem.
Some maintain the front must have steering protection. Some say that the front tires will kick up debris that could damage a worn rear tire that would have survived with a new tire.
What about stopping? New on the front will be better. What about accelleration traction? FWD or RWD.
Generally speaking, they are correct, but sometimes it is not the case. Try stopping on a curve with any car with the better ones on the rear. Severe disapointment will follow.
I also am suprised to note that they do not recommend replacing tires in sets if the safety is that drastic. It is always better to rotate the tires and then replace 4 at the same time.
Does this imply that tires 1/2 worn are always unsafe, if all 4 are worn? Of course not, but the implication is there.
What about cars that are heavier on the rear? That will change things quite a bit.
Just some things to think about. Again, they are basicly correct, but there are some glaring variations to consider.
Don't forget AWD vehicles. You run the risk of doing drive train damage if you just replace two tires. 'Click and Clack' backed that up in an answer to a question on their radio show a couple of weeks ago.
Rotate the tires on a regular basis and replace all four when the time comes.
Jim Olson 
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in Forum: C3 Engines, Driveline and Handling
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