buying some tires and wheels

[jtdesigns]

OK guys, I need your input on this one. I found some wheels and tires that may fit my Comanche. The tire size is 235/75/R15 how close is that to factory size?? I want to do a conversion using this calculator. http://www.miata.net/garage/tirecalc.html

 

To see if I'll have any differences in my speedo.

 

The guy called them Ecco rims... whatever.

 

here's the rim,,, He said they came off a Cherokee and they are 5 on 4.5

 

Is there a difference from stock on the tires?

 

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[Pete M]

Those should fit fine. Stock tires were generally 205 or 225.

[jpdriver1]

I've been running 235/75/R15 tires for yrs on mine --- no ill effects on gears or axles. you can use a GPS unit to check your actual speed Vs the speedo or replace the speedo gear ( I was too lazy to change the gear :brows: )

[DirtyComanche]

Mine had 235/75R15s on it when I bought it. They fit decent, a little contact on the LCAs at full lock. Those rims should work too.

 

I think the largest factory tire was a 225/75R15.

 

Speedo was about 5% low, IIRC. Not enoguh to matter to me.

[jtdesigns]

I've been running 235/75/R15 tires for yrs on mine --- no ill effects on gears or axles. you can use a GPS unit to check your actual speed Vs the speedo or replace the speedo gear ( I was too lazy to change the gear :brows: )

 

Yeah I didnt think about tracking my speed using gps.. I think I need a new cable anyways,, The one in it now pulled out when I remover the cluster to clean it. That thing just slid right out... How hard is it to replace the gear??

[LEAD_NOT_FOLLOW]

Here is a tire tech calculator I wrote awhile ago based specifically on the XJ/MJ.

 

http://www.greatlakesxj.com/tech/tech_calcs.html

[jtdesigns]

Here is a tire tech calculator I wrote awhile ago based specifically on the XJ/MJ.

 

http://www.greatlakesxj.com/tech/tech_calcs.html

 

Cool but what diameter is a 235??

[jtdesigns]

Here is a tire tech calculator I wrote awhile ago based specifically on the XJ/MJ.

 

http://www.greatlakesxj.com/tech/tech_calcs.html

 

Cool but what diameter is a 235??

 

nevermind.... your cal has that too!!!!! I never knew that 235/35/blah,blah,blah was a metric measurement..

[gixxerman600]

28.3

[Eagle]

Those are Ecco rims and they are from a 2000 XJ Sport. They're 15x7 and are the same size as any of the Jeep alloys that fit the MJ.

 

As already noted, most MJs had either 205/75R15 or 225/75R15 tires. A 235/75 is only slightly larger. Most times the factory speedometer reads slightly faster than actual road speed anyway, so with the 235s your speedo should be pretty much right on the money.