Car pulls only under acceleration...
07-06-2007, 07:38 AM
#23
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Ok- working with the dealer now.
Tire pressures - check
Tire wear - check
4 wheel alignment - check (toe was a little off)
Still pulls dramatically left - most noticeable at 65mph in 5th - mash the pedal and without correction I'll change lanes.
Thoughts??
Tire pressures - check
Tire wear - check
4 wheel alignment - check (toe was a little off)
Still pulls dramatically left - most noticeable at 65mph in 5th - mash the pedal and without correction I'll change lanes.
Thoughts??
07-06-2007, 11:17 AM
#26
Make sure you have MATCHING rear tires, sizes, brands, etc. You did not mention if it pulls to the right while engine braking or not.
The reason that everyone suggested to check tire pressures first is that a fully inflated tire has a greater O.D. than an underinflated one. When accelerating, the car will pull dramatically towards the "smaller" tire (it has nothing to do with traction as mentioned earlier, everything to do with effective diameter) Sometimes even tires of the same brand/size/lot # will wind up being slightly different in diameter (Yokohama ES100's are notorious for this) to tell if it is really a tire problem, simply swap your rears side to side. If the symptoms switch sides, it's a tire issue, if not then you have a problem with your alignment/suspension/rear diff.
Cheers, Mike
The reason that everyone suggested to check tire pressures first is that a fully inflated tire has a greater O.D. than an underinflated one. When accelerating, the car will pull dramatically towards the "smaller" tire (it has nothing to do with traction as mentioned earlier, everything to do with effective diameter) Sometimes even tires of the same brand/size/lot # will wind up being slightly different in diameter (Yokohama ES100's are notorious for this) to tell if it is really a tire problem, simply swap your rears side to side. If the symptoms switch sides, it's a tire issue, if not then you have a problem with your alignment/suspension/rear diff.
Cheers, Mike
07-06-2007, 12:03 PM
#27
Originally Posted by CaptainMike,Jul 6 2007, 02:17 PM
... to tell if it is really a tire problem, simply swap your rears side to side. If the symptoms switch sides, it's a tire issue...
Feel free to correct me if you see fit... BUT we should remind this owner as well that our tires are, by most offered brands, typically uni-directional. And as such, they are not designed to be driven in the 'opposite' direction to that of how they are designed to be driven/mounted to the wheel. As such, the test you recommend should be done only for a short period of time...and for certain, not permanently.
Agreed?
And after considering this point...the owner might in fact be advised to double-check that the tires are indeed mounted in the correct orientation on all wheels
07-06-2007, 12:23 PM
#28
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Originally Posted by CaptainMike,Jul 6 2007, 12:17 PM
swap your rears side to side. If the symptoms switch sides, it's a tire issue, if not then you have a problem with your alignment/suspension/rear diff.
Cheers
Cheers
07-06-2007, 02:09 PM
#30
Originally Posted by w1ngman,Jul 6 2007, 03:03 PM
Mike,
Feel free to correct me if you see fit... BUT we should remind this owner as well that our tires are, by most offered brands, typically uni-directional. And as such, they are not designed to be driven in the 'opposite' direction to that of how they are designed to be driven/mounted to the wheel. As such, the test you recommend should be done only for a short period of time...and for certain, not permanently.
And after considering this point...the owner might in fact be advised to double-check that the tires are indeed mounted in the correct orientation on all wheels
Feel free to correct me if you see fit... BUT we should remind this owner as well that our tires are, by most offered brands, typically uni-directional. And as such, they are not designed to be driven in the 'opposite' direction to that of how they are designed to be driven/mounted to the wheel. As such, the test you recommend should be done only for a short period of time...and for certain, not permanently.
And after considering this point...the owner might in fact be advised to double-check that the tires are indeed mounted in the correct orientation on all wheels
I have been told by several people, including Jim at Tire Rack, that running a directional tire the 'wrong' way will not hurt the tire (or the car), but that it will simply cause your wet traction to go completely to crap. The groove shape on a directional tire is designed to push water from the center outward, if you run it in the opposite direction you have turned it into a hydroplaning machine. Not a good idea on any car, but especially bad on an S2000.