Rims

[HotRodMercury]

I might be adding 20's on the rauder my rauder is an 04,
would thay work with out trickin out the computer?..

[justbob]

Your speedo will be off. So yes you would have to trick out your computer.

[HotRodMercury]

Damit,

thanks...

[hot-rauder]

if you can afford the rims you can afford a simple tune for it too i think.....

[rayjay]

I wonder what it will do to the TC?

[ELMARAUDER]

in sittin on 22 inch rims.u will need a little horse power to have the same feeling on stocks

[Marauderjack]

I might be adding 20's on the rauder my rauder is an 04,
would thay work with out trickin out the computer?..

Depends on the over all diameter of the 20's......OEM's are:

Fronts: 27.2"
Rears: 28.5"

You will more than likely be able to find 20's with close to these diameters if ya look around some manufacturer's sites!!:beer:

Good Luck!!

Marauderjack:burnout:

[HotRodMercury]

Depends on the over all diameter of the 20's......OEM's are:

Fronts: 27.2"
Rears: 28.5"

You will more than likely be able to find 20's with close to these diameters if ya look around some manufacturer's sites!!:beer:

Good Luck!!

Marauderjack:burnout:


Thats what I was thinking im hopeing I can find a 20 to match up
with the size of the stock, thanks.

[gdmjoe]

HotRodMercury - Thats what I was thinking im hopeing I can find a 20 to match up with the size of the stock, thanks.
Tire Size Calculator (http://www.miata.net/garage/tirecalc.html) <<<<< -click-

[gmtech]

Thats what I was thinking im hopeing I can find a 20 to match up
with the size of the stock, thanks.
exactly what i have, my 20's are stock overall diameter so nothing changes

http://www.mercurymarauder.net/showcase/files/6/0/6/2/WheelSwap014.jpg

[TiTo35]

exactly what i have, my 20's are stock overall diameter so nothing changes

http://www.mercurymarauder.net/showcase/files/6/0/6/2/WheelSwap014.jpg
:2thumbs:



123

[ChiTownMaraud3r]

Tire Size Calculator (http://www.miata.net/garage/tirecalc.html) <<<<< -click-


I don't think we can trust things like this, it says our stock rears are 705 Rev/mile, when BFGs website says 724.
Just go outside, and measure from the ground up to the center of the hub, that will give you the tire radius with a load.

Then divide how many inches there are in a mile by the circumference of the tire.

So,
63360(inches in a mile) = Closer to the actual revolutions per mile.
2*radius*Pi

I would try to match up the new tires overall diameter as close to the stock diameter as possible, mount the new wheels and tires, and then measure and correct using a tuner.
:beer:

[HotRodMercury]

Those are bullits?, WOW that looks dawm good
but one question what year is your car?...

Oh and is the lip in the rear slighty bigger then front?.

[rayjay]

but one question what year is your car?...

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03 300A

[gmtech]

Those are bullits?, WOW that looks dawm good
but one question what year is your car?...

Oh and is the lip in the rear slighty bigger then front?.


2003 and yep the rear lip is about twice the size of the front:D

[CRUZTAKER]

Your speedo will be off. So yes you would have to trick out your computer.


Damit,

thanks...


Depends on the over all diameter of the 20's......OEM's are::burnout:

You beat me to it Jack.

The diameter of the rim means little if the tire mounted to it is going to maintain really close to the stock runout.
How do you think we run 16" steelies with snow tire up north here without any tuning? Shorter rin, taller tire, equaling nearly stock 28" tall.

We put 20's on the Aviator with lower profile tires and the speedo is off by only 3-4 miles per hour. It does not affect the eec what-so-ever.

However, the lack od tire pressure sensors in the new wheels throws an error on the dash monitor.