Brian 00GT
Unsafe at any speed
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mmm....Corona
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« on: November 22, 2004, 08:25:30 PM » |
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About a month ago I was forced into getting a new set of wheels and tires (long story). I had a friend of mine handle the whole finding the wheels tires for me and all he could come up with in Houston for only a 24 hr wait was 275 wide in the front and 285 wide in the back on 18" Cobra R's. I have noticed that since they were put on the steering wheel is kind of squirrelly(sp) above 45 mph. The car itself drives fine, still only has a very slight pull to the left, as it always has. I was wandering if the width of the tires in the front would cause this. I can't come up with anything else.  The wheel just seems to want to jitter |
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Brian Also known as 2000 Fobra R SOLD - 2000 Mustang GT - Full Suspension, Bolt-ons, and T-Trim @ a little psi If you have carried on a conversation with someone for 10 post and have only said five words, you are probably a post whore.
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doogz
i'd short you on a downtick if i could
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London, UK
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« Reply #1 on: November 23, 2004, 06:27:50 AM » |
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If it's like a side to side shimmy, like when the wheel would be rotating, they could be out of balance. Take the front ones and put 'em on back, put the back ones up front and see if the shimmy just transferred to the rear. If it did, the wheel(s) probably need balancing.
I think the only thing the wider tires would do is follow imperfections in the road a lot more... Grooves, dips, potholes, etc.. Mine always pulled to the right under moderate braking but I had 245's up front.
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Phil you need to grow a sac and get the f*** over it.
Stop whining about getting dumped, and go f*** her best friend in the ass I may be outnumbered and get ram-rodded in the cornhole from time to time
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Brian 00GT
Unsafe at any speed
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mmm....Corona
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« Reply #2 on: November 23, 2004, 06:56:05 PM » |
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I did try switching them and it made no difference. I watched them balance the tires, too. I think that maybe they are just hunting the imperfections in the road as you say, since our roads suck.  It seems odd to me, though, that speed is a factor. |
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Brian Also known as 2000 Fobra R SOLD - 2000 Mustang GT - Full Suspension, Bolt-ons, and T-Trim @ a little psi If you have carried on a conversation with someone for 10 post and have only said five words, you are probably a post whore.
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TireSmoke
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Do what you love and f*** the rest
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« Reply #3 on: November 24, 2004, 06:22:15 AM » |
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Do the new tires have a vertical stripe around the tire? Both my kuhmo 712s and bridgestone re730s had the center stripe and both hunted the road pretty badly. they were 245s......I dont think its anything to worry about.
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« Last Edit: Today at 02:24:53 AM by TireSmoke »
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Brian 00GT
Unsafe at any speed
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mmm....Corona
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« Reply #4 on: November 24, 2004, 08:17:44 PM » |
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They do. I think that they are just hunting the road. I drove around a lot today and tried to pay attention to what it was doing. The amount of shake in the wheel did depend on the surface/quality of the road etc. I have just never had tires do it this bad I guess. Maybe the width just maginifies it |
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Brian Also known as 2000 Fobra R SOLD - 2000 Mustang GT - Full Suspension, Bolt-ons, and T-Trim @ a little psi If you have carried on a conversation with someone for 10 post and have only said five words, you are probably a post whore.
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TireSmoke
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« Reply #5 on: November 25, 2004, 02:06:20 PM » |
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both the width and the stripe make hunting worse....comes with having perfomance tires I guess?
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« Last Edit: Today at 02:24:53 AM by TireSmoke »
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GotTorque?
Has grease under her fingernail polish.
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Vehicle: 1995 Ford Mustang GT
Akron, OH
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« Reply #6 on: December 01, 2004, 12:57:49 PM » |
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I have noticed that since they were put on the steering wheel is kind of squirrelly(sp) above 45 mph. The car itself drives fine, still only has a very slight pull to the left, as it always has. I was wandering if the width of the tires in the front would cause this. I can't come up with anything else. The wheel just seems to want to jitter If you have a shimmy in the steering wheel that developed when you put the tires on, it could be that the assembly is out of balance (I know you had that checked, but ask them to get a reading on the Hunter after they put the balance correction weights on). It could also be that the new assemblies are not quite round, which would cause a high-speed fore/aft force variation (the tires push front to back which translates through the steering wheel and causes SW shimmy), which could be a problem in the tires. Sorry my response is late, but let me know if I can clarify this any. Oh, and JD, a center rib helps the 'on center feel' of the tire, which is part of the reason you see them on high performance tires. It gives you better turning feedback. |
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Brian 00GT
Unsafe at any speed
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mmm....Corona
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« Reply #7 on: December 02, 2004, 11:56:38 PM » |
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I am going to look into this again after the car is running again. Cara - What do you mean by "the new assemblies are not quite round"? Do you mean that the tires are screwed up? |
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Brian Also known as 2000 Fobra R SOLD - 2000 Mustang GT - Full Suspension, Bolt-ons, and T-Trim @ a little psi If you have carried on a conversation with someone for 10 post and have only said five words, you are probably a post whore.
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GotTorque?
Has grease under her fingernail polish.
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Vehicle: 1995 Ford Mustang GT
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« Reply #8 on: December 03, 2004, 08:22:28 AM » |
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Well, Brian- no tires are made perfectly round. Some are just 'less round' than others. There are limits set for tires for new cars based on the sensitivity of the vehicle. Any tires you but that are not original equipment have higher limits. Occasionally, a tire is sold that is much less round than it should be, and it will cause your vehicle to vibrate. If it does happen to be the front tires that are high, causing steering wheel shimmy, try swapping your fronts and backs. If the shimmy goes away you know either there is a problem with the tire, the wheel, or the balance correction. It is also a possibility that the static imbalance of the tire/wheel assembly is so high, it cannot be corrected with regular balance weights. Keep in mind this is just one possible solution. I'd try swapping your front tires to the rear to see if the shimmy goes away, then report back!  |
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TireSmoke
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« Reply #9 on: December 06, 2004, 10:55:11 PM » |
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ohhhh ya....the "on center feel"...gotta love a woman that knows her tires (and cars) I like em cause I can take any corner at twice the "sign rated" speed. Guess thats on center |
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« Last Edit: Today at 02:24:53 AM by TireSmoke »
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TireSmoke
...Is now in HD!
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Do what you love and f*** the rest
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« Reply #10 on: December 06, 2004, 10:55:43 PM » |
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I guess a set of ET Streets has one hell of an "on center feel", LMFAO!!
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« Last Edit: Today at 02:24:53 AM by TireSmoke »
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GotTorque?
Has grease under her fingernail polish.
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Vehicle: 1995 Ford Mustang GT
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« Reply #11 on: December 07, 2004, 07:37:40 AM » |
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I like em cause I can take any corner at twice the "sign rated" speed. Guess thats on center Double plus five! |
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