Will lower profile tires increae low end torque? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 19 (permalink) Old 02-07-2003, 04:17 PM Thread Starter
 
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Will lower profile tires increae low end torque?

Would going from say a 60 series tire to a 55 series increase low end torque? After all, it is changing the gear ratios, right? Supposedly, going from a 60 to a 50 will make the wheel 1" in diameter smaller.

I'm about to replace my 235/60/16's and curious of my options and if it would be worth the lower profile tires (better handling is a different issue).

Discount Tires has a good price on the Toyo 235/55/16 H rated for $83 installed. I'm debating between those and some Kumhos H rated 235/60's for only $50 each installed.

Last edited by Intrepidude; 02-07-2003 at 04:54 PM.
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post #2 of 19 (permalink) Old 02-07-2003, 04:46 PM
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mathematically....yes...will you feel the difference...prolly not
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post #3 of 19 (permalink) Old 02-07-2003, 04:48 PM
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Would have to go even lower tire size to feel it.
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post #4 of 19 (permalink) Old 02-07-2003, 06:35 PM
 
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Most people get low pros because they get larger rims, changing your overall tire diameter also screws up your speedometer calibration.
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post #5 of 19 (permalink) Old 02-07-2003, 07:48 PM
 
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Quote:
Originally posted by Jer_BEAR_bluez
Most people get low pros because they get larger rims, changing your overall tire diameter also screws up your speedometer calibration.
Which means more speeding tickets....right, Bear? ;)

C'mon, I was waiting for you to plug that.
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post #6 of 19 (permalink) Old 02-07-2003, 07:58 PM
 
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Quote:
Originally posted by Titleist


Which means more speeding tickets....right, Bear? ;)

C'mon, I was waiting for you to plug that.
Actually it'd mean fewer, because when you go with smaller tires/rims the tire rotates faster to go the same speed, so therefore you'll actually be going slower than what your speedometer says.
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post #7 of 19 (permalink) Old 02-07-2003, 09:03 PM
 
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Low profile tires will give you better handling.

I just had some KUMHO ECSTA STX P225/55R17 97V tyres put on today. They are the same size as stock. I've only driven a few miles with them, but they seem to stick to the pavement better. They look aggressive as hell!!! I'll need a few more miles on them before I can come to any type of conclusion.
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post #8 of 19 (permalink) Old 02-07-2003, 10:46 PM
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I went from 15" to 17" and there was no differance in the M.P.H. Maybe thats not a drastic increase.
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post #9 of 19 (permalink) Old 02-07-2003, 11:39 PM
 
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Quote:
Originally posted by creepingdeath
I went from 15" to 17" and there was no differance in the M.P.H. Maybe thats not a drastic increase.
I bet when you went to a bigger rim you also went with a lower profile tire.

If your OVERALL diameter remains the same (tire+rim), than your speedo will read the same. If you increase your rim size but don't decrease your tire size, you will get a bigger overall diameter.

Intrepidude is talking about keeping the same rim size but going with a lower profile tire. This will decrease his overall diameter and will effect his speedo accuracy.
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post #10 of 19 (permalink) Old 02-08-2003, 01:47 AM
 
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post #11 of 19 (permalink) Old 02-08-2003, 03:16 AM
 
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Hey warlord - how noisy are those tires? The comments on the tirerack thing made it seem like they GOTTA be more quiet than the Michelins.

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post #12 of 19 (permalink) Old 02-08-2003, 11:06 AM
 
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A point to remember: Switching to larger rims and lower profile tires usually means more weight per wheel/tire assembly. More importantly, you increase unsprung weight and increase the rotational mass of each wheel/tire assembly. Bottom line: Your acceleration is slowed, but handling will improve.
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post #13 of 19 (permalink) Old 02-08-2003, 11:14 PM
 
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Quote:
Originally posted by Don Hardy
Hey warlord - how noisy are those tires? The comments on the tirerack thing made it seem like they GOTTA be more quiet than the Michelins.

I never thought the Pilots were all that noisy. These KUMHOs aren't noisy. I do hear some noise when slowing down, but I don't know if that is more noise or just "different" noise and my brain just hasn't learned to filter it out yet.

I did a few more miles of driving today and the more I drive, the more I love these new tyres!!!
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post #14 of 19 (permalink) Old 02-11-2003, 09:05 AM
 
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I would say that technically torque change would only happen with a different diameter, not necessarily the profile.

Last edited by jakeoooooo; 02-11-2003 at 09:16 AM.
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post #15 of 19 (permalink) Old 02-11-2003, 12:25 PM
 
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well, lower profile = smaller diameter.
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