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smaller front tires on FWD

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Old Oct 20, 2005 | 06:15 PM
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Default smaller front tires on FWD

okay, let me make sure i got this right...
if you put smaller front wheels on a FWD, you're going to change the rate at which the car change gears (automatics) and something about the speedometer being off because of the difference turn cycles...
and this is bad...

i'm confused, i swore i read somewhere on here that getting smaller front wheels on FWD would make the car "faster" because it has to spin less, there by spin faster on the axle, and something about the acceleration rate...please inform me.
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Old Oct 20, 2005 | 06:36 PM
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smaller front wheels = smaller diameter than stock

smaller diameter wheels will give you shorter gearing, which increases torque, which increases acceleration

smaller diameter wheels USUALLY weigh less, which increases acceleration, braking, and handling

yes, smaller front wheels will make the car faster..but too small is obviously bad
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Old Oct 20, 2005 | 07:10 PM
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it doesnt make a big difference. smaller profile tires on stock rims just look odd, and will throw off your speedo, and run up more miles on the odometer
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Old Oct 20, 2005 | 07:32 PM
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Originally Posted by janiVI
and run up more miles on the odometer
I don't think the odo is actually wired the same was as the speedo is...My speedo is about 5MPH too fast at highway speeds but the odometer is nearly perfectly accurate (off .1 at 20 miles). Does anyone know?
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Old Oct 20, 2005 | 07:43 PM
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Just take the cluster out, you wont have to worry about it then!
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Old Oct 20, 2005 | 07:55 PM
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Originally Posted by OHS
I think everything in that cluster is electronic. The speedo has a separate "motor" that runs it and the odometer does too. Let me consult my electronic brain for a second............ Okay it does seem one is not quite right. The speedo/odo both receive pulses from the VSS and are run off the same circuit as far as I can see here. That would leave me to conclude the speedo drive motor is receiving more voltage than the odo drive motor, which may be able to be fixed with a resistor change?

The other possibility is the return spring in the speedo has "stretched" a bit (195K and still ticking) and has less resistance, thereby allowing the speedo needle to move further than originally designed.

Good luck, work safely

Ozarks Honda Specialist is committed to being the very best
No, my speedo is off because I don't have the same overall tire diameter that the car originally had. The factory odo/speedo error is something like 3.1%. I read that in C&D.
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Old Oct 20, 2005 | 08:12 PM
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I think I misunderstood thought you were actually a sane person
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Old Oct 20, 2005 | 08:14 PM
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Originally Posted by 98CoupeV6
No, my speedo is off because I don't have the same overall tire diameter that the car originally had. The factory odo/speedo error is something like 3.1%. I read that in C&D.
:thinking: But how would the odo know to compensate for the change in diameter.... i think they run off the same sensor/type of sensor. :dunno:
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Old Oct 20, 2005 | 08:24 PM
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According to what I see here you should just go ahead and gut the electrical system and start over fresh and new
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Old Oct 21, 2005 | 08:52 AM
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smaller wheels/tires will make the car quicker, not faster.
less rotating mass but the engine will have to whine up more to get the same speed as of a larger wheel/tire.
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