Is it the wheels, tires, or combination of both?
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Is it the wheels, tires, or combination of both?
I just swapped out my OEM lobster forks w/ Pirelli Rossos (4400 miles of gentle use) with a set of XRR/Carrera Sport wheels with Michelin PS2s (300 miles of prior use).
While doing some spirited driving on some winding roads, some with very sharp hairpins, I felt more yaw movement or what seemed like squirming with the XRR/Michelin combo. With the lobsters/Pirelli combo, I would usually feel a little front chattering or understeer, then the car would hook up. I would also sometimes feel the rear get a little bit loose, but not much noticeable yaw motion.
Has anyone else experienced this? Sorry if I'm not explaining this clearly - I don't track my car and don't have much to compare this to.
Thanks in advance for the responses.
While doing some spirited driving on some winding roads, some with very sharp hairpins, I felt more yaw movement or what seemed like squirming with the XRR/Michelin combo. With the lobsters/Pirelli combo, I would usually feel a little front chattering or understeer, then the car would hook up. I would also sometimes feel the rear get a little bit loose, but not much noticeable yaw motion.
Has anyone else experienced this? Sorry if I'm not explaining this clearly - I don't track my car and don't have much to compare this to.
Thanks in advance for the responses.
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From: Birmingham, AL
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I just swapped out my OEM lobster forks w/ Pirelli Rossos (4400 miles of gentle use) with a set of XRR/Carrera Sport wheels with Michelin PS2s (300 miles of prior use).
While doing some spirited driving on some winding roads, some with very sharp hairpins, I felt more yaw movement or what seemed like squirming with the XRR/Michelin combo. With the lobsters/Pirelli combo, I would usually feel a little front chattering or understeer, then the car would hook up. I would also sometimes feel the rear get a little bit loose, but not much noticeable yaw motion.
Has anyone else experienced this? Sorry if I'm not explaining this clearly - I don't track my car and don't have much to compare this to.
Thanks in advance for the responses.
While doing some spirited driving on some winding roads, some with very sharp hairpins, I felt more yaw movement or what seemed like squirming with the XRR/Michelin combo. With the lobsters/Pirelli combo, I would usually feel a little front chattering or understeer, then the car would hook up. I would also sometimes feel the rear get a little bit loose, but not much noticeable yaw motion.
Has anyone else experienced this? Sorry if I'm not explaining this clearly - I don't track my car and don't have much to compare this to.
Thanks in advance for the responses.
With the new PS2's the car doesn't hardly break loose at all in the rear like it would on the worn Pirellis.
To me their is a difference in feel the Pirelli's felt maybe a little more precise. But I don't track my car either so it is very subjective on my part.
Overall I like the Ps2's much better. Quieter, less flat spotting and after about a 1,000 miles I think they handle better.
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From tirerack:
Tires are comprised of many layers of rubber, steel and fabric. Due to these different components, your new tires require a "break-in" period to ensure that they deliver their normal ride quality and maximum performance. As tires are cured, a "release lubricant" is applied to prevent them from sticking in their mold. Some of the lubricant stays on the surface of your tires, reducing traction until it is worn away. Five hundred miles of easy acceleration, cornering and braking will allow the mold release lubricant to wear off, allowing the other tire components to begin working together. It is also important to note that your old tires probably had very little tread depth remaining when you felt it was time to replace them. As any autocrosser or racer who has tread rubber shaved off of his tires will tell you "low tread depth tires respond quicker."
Don't be surprised if your new tires are a little slower to respond (even if you use the exact same tire as before). Their new, full depth brings with it a little more tread squirm until they wear down.
Don't be surprised if your new tires are a little slower to respond (even if you use the exact same tire as before). Their new, full depth brings with it a little more tread squirm until they wear down.
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Thanks for the input guys. Since the Michelins only have about 300 miles on them and the Pirellis are down to 5/32nds tread depth on the back and ~7/32nds on the rear, I'm probably feeling the full tread depth of the Michelins versus the broken tread of the Pirellis.
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Did you change tire aspect ratio or are the PS/2's that same size as the Pirelli's?
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XRR/Carrera Sport wheels are 1/2" wider front and back (8-1/2" and 11-1/2").
Tires are same size in front - 235mm, rears are 10mm wider on the Michelins - 305mm.
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Since therefore it's not tire pressure, maybe the enhanced grip of the PS/2's is affecting the shocks and sway bars a bit.
You are definitely getting better grip and that might be telling you that something may be going on with the suspension.
A friend experienced a similar thing with his 360 when he went to wider tires.
Turned out sway bar bushings were a bit weak. Once replaced made a huge difference in the handling.
Just thoughts.
You are definitely getting better grip and that might be telling you that something may be going on with the suspension.
A friend experienced a similar thing with his 360 when he went to wider tires.
Turned out sway bar bushings were a bit weak. Once replaced made a huge difference in the handling.
Just thoughts.
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Since therefore it's not tire pressure, maybe the enhanced grip of the PS/2's is affecting the shocks and sway bars a bit.
You are definitely getting better grip and that might be telling you that something may be going on with the suspension.
A friend experienced a similar thing with his 360 when he went to wider tires.
Turned out sway bar bushings were a bit weak. Once replaced made a huge difference in the handling.
Just thoughts.
You are definitely getting better grip and that might be telling you that something may be going on with the suspension.
A friend experienced a similar thing with his 360 when he went to wider tires.
Turned out sway bar bushings were a bit weak. Once replaced made a huge difference in the handling.
Just thoughts.
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From: East Bay, Northern California
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I'm just running the factory recommended pressure since I don't track my car. However, if I do track my car, then I'll definitely adjust the pressure based on the experienced track junkies' recommendations.
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I had a 733i BMW that would misbehave with new tires, and everytime it was front A-arm bushings needing replacement.
You may have the same type of issues going on.
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