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Old 01-31-2006, 03:03 AM   #1
Mike Jeannotte
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Wheel size and effects

Hey, I'm pretty new to the whole car modification scene and have only recently started messing with my car... So my question is: Will the size of my rims affect the accuracy of my speedometer? For instance, my car comes stock with 16"s, but I want to buy some 19"s... A friend of mine said it may mess up the accuracy of my speedometer or mess up the tranny... Is any of this true, or is he just a moron? Thanks for looking...
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Old 01-31-2006, 03:06 AM   #2
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Quote:
Originally Posted by Mike Jeannotte
Hey, I'm pretty new to the whole car modification scene and have only recently started messing with my car... So my question is: Will the size of my rims affect the accuracy of my speedometer? For instance, my car comes stock with 16"s, but I want to buy some 19"s... A friend of mine said it may mess up the accuracy of my speedometer or mess up the tranny... Is any of this true, or is he just a moron? Thanks for looking...
I dont think he is a moron... i think it will screw up ur speedometer reading a little bit but not too much... ur accelartion will also slow down... BTW not totally sure about the speedometer though
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Old 01-31-2006, 03:31 AM   #3
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The speedometer will be messed up, not by too much, but (vague estimate) +/-5 miles...I don't think it will mess up the tranny though, and acceleration won't be much slower, but it will probably be noticeable...
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Old 01-31-2006, 03:43 AM   #4
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depends on the wheel diameter..... period

larger diameter will make it read low, smaller will make it read high

depending on the type of car, you may be able to adjust for that. if you get too extreme, it can do weird things to your abs sensitivity, as well...
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Old 01-31-2006, 03:46 AM   #5
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when i got rims they just put a tire with a smaller side wall to take care of the difference in rim size , would that still make the speedometer off?
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Old 01-31-2006, 03:50 AM   #6
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Quote:
Originally Posted by Tech_N9ne
when i got rims they just put a tire with a smaller side wall to take care of the difference in rim size , would that still make the speedometer off?

if the diameter is the same, no...
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Old 01-31-2006, 03:57 AM   #7
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Originally Posted by dodger65
if the diameter is the same, no...
thats what i thought, thanks
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Old 01-31-2006, 04:03 AM   #8
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I read it isnt reccomended to go over 2 inches over stock size. What car is it?
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Old 01-31-2006, 04:27 AM   #9
Mike Jeannotte
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It's a 2001 VW Passat V6, but I think my friend has convinced me to go with 17"s... I dunno though...
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Old 01-31-2006, 04:43 AM   #10
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18's all thee way baby
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Old 01-31-2006, 05:55 AM   #11
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Old 01-31-2006, 08:15 AM   #12
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Quote:
Originally Posted by newyorker
I read it isnt reccomended to go over 2 inches over stock size. What car is it?

wow, your retardeness never ceases to amaze me...

never go 2 inches over? what about your neon, dosent that come with lie 15's? ive seen neons with 8's, and some 19's

it all matter about the final diameter and clearnce between the tire and wheel well, man you need to go away again

EDIT: what about all those SUV's with 22's or 24's or 26's? when the come stock 17's or 18's? that seems to be more than 2 inches to me...
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Old 01-31-2006, 05:09 PM   #13
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To be honest, I've never put oversized wheels on any of my cars, so I dont have hands on kn wledge of this. But from experience in driving cars occassionally with then, I think the only thing that will be greatly affected will be the handling of the car. For example, if the wheels are exccessively large, the car may bounce around bends rather than sticking to the road as some might suggest. Ride quality will also be affected
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Old 01-31-2006, 07:14 PM   #14
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Dont go 2 inches over stock size.
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Old 01-31-2006, 11:28 PM   #15
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Quote:
Originally Posted by ride3k
EDIT: what about all those SUV's with 22's or 24's or 26's? when the come stock 17's or 18's? that seems to be more than 2 inches to me...
yea they have 18inch rims with tires with huge sidewalls right? so they get bigger rims and tires with tiny side walls, which keeps the diameter the same...but u can only go so small lol so i guess u are right to a point
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