smaller wheels?

[noobydude]

hey everyone,
new forum member here and i know this one of those questions that probably resurfaces every month from noobies like me, but here goes again:

i have 18'' stock on my VX but was thinking of going down to 16's just because i have an affordable offer from a connection.
i know that going UP in size can affect mileage,speedometer, etc.
am i correct in thinking going down in size does the same? and to what degree(s)?

[Triathlete]

Rim siz will have no affect. Tire diameter and wheel/tire weight do however. Also make sure your "new" wheels have the correct center bore. The VX has a large hub.

[nfpgasmask]

I just went from stock 18" rims to 16" American Racing rims. I do not notice much of a change in my MPG. Like Tri said, make sure you get a rim with a large hub opening and the right back spacing/offset. Also, since you are going down to a 16" wheel, do a test fit on the front end and make sure the rims clear the brake calipers.

Then you are good to go!

Bart

[Ruflyf]

And lastly dont forget to donate your stock 18's to your fellow vxer clear across the country. lol

[noobydude]

thanks guys,
and just to make sure,there shouldn't be an issue with speedometer or messing with the TOD/ABS systems or drivetrain?
i heard going bigger had effects on those things, but going down in size should not be a prob?

[nfpgasmask]

Hey Ruf, I did make the decision to sell my stock rims, but they need to go with the tires because I have some $$$ in them. I want $1000 for all four or $250 each. Otherwise, I'm keeping them...

Bart

And lastly dont forget to donate your stock 18's to your fellow vxer clear across the country. lol

[nfpgasmask]

I don't think you will have any issues there unless you do something drastic like lift and put 33" Swampers on...

Bart

thanks guys,
and just to make sure,there shouldn't be an issue with speedometer or messing with the TOD/ABS systems or drivetrain?
i heard going bigger had effects on those things, but going down in size should not be a prob?

[MZ-N10]

sac huh....ill take those rims off u...NO CHARGE. lol

[Ruflyf]

as long as all 4 tires get replaced and stay the same size, TOD should work fine, unless something drastic like Bart mentioned.

Bart, thanks but I cant really do the $1k currently. Especially with Christmas around the corner

[Ldub]

First things first...

Welcome to the Fam...

thanks guys,
and just to make sure,there shouldn't be an issue with speedometer or messing with the TOD/ABS systems or drivetrain?
i heard going bigger had effects on those things, but going down in size should not be a prob?

Here's how it works...going up OR down in size from stock will have an effect on your speedo/odo...
A tire with a larger overall diameter makes fewer revolutions per mile.

A tire with a smaller overall diameter has to make more revolutions to cover that same distance.

I hope this will help, rather than add to the confusion...

Stock 99 tire : 245/70x16".....29.5 oa diameter
Stock 00/01 tire : 245/60x18".29.57 oa dia.
........................265/70x16"..30.6 oa dia. (common upgraded replacment size, with a little trimming)
........................285/75x16"..32.83 oa dia. (common upgraded size, w/lift & trimming)

All the above info. is for stock rims...an aftermarket rim with a different offset (usually more negative...towards the outside of fender) will throw all the lift/trimming info. completely off.

[etlsport]

from the scangauge II instruction manual on how to adjust your speed with different tire size...

The approximate % to use for a tire size
change can be computed by dividing the diameter of the original
equipment tire by the diameter of the new tire, subtract this from 1 and
multiply by 100. For instance, if the diameter of the original tires was 24
inches and the size of the new tire is 30 inches, 100x(1-(24/30)) = 20. (you are going 20% faster than what your speedo reads)

[crager34]

Check my gallery. 17" rims.

[noobydude]

thanks everyone,
hopefully they will work out