question on tires

A

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NAXJA Forum User

Location

raleigh nc

• Mar 10, 2005

• #1

i have 235's on my jeep now but i will be getting 31,s how much of a difference is there gonna be between my actual speed and the speed on my speedo

 

BrettM

NAXJA Forum User

Location

michifornia

• Mar 10, 2005

• #2

ABOUT 10 percent.

235/75r15s are about 28" so going up 3 inches would be about a 10% change. real world may be a little different. a new speedo gear only costs a couple dollars and takes just a few minutes to swap. check Gojeep's website to figure out which one you need.

 

A

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NAXJA Forum User

Location

raleigh nc

• Mar 10, 2005

• #3

thanks

 

Yucca-Man

NAXJA Member # 683

Location

Castle Rock, CO

• Mar 10, 2005

• #4

Funny thing is that you'll probably be off by less than that - your Jeep is probably running under the right speed right now, so adding the larger tires is only going to bump you slightly over the correct speed. You won't know for sure until you actually measure it against a known course.

 

scoobyxj

NAXJA Forum User

NAXJA Member

Location

Coshocton, OH

• Mar 10, 2005

• #5

Yucca-Man said:

Funny thing is that you'll probably be off by less than that - your Jeep is probably running under the right speed right now, so adding the larger tires is only going to bump you slightly over the correct speed. You won't know for sure until you actually measure it against a known course.

Click to expand...

X2 My 2k is dead on with 31's.

 

Only In A Jeep XJ

NAXJA Forum User

Location

Greenville, Texas

• Mar 10, 2005

• #6

I went from the stock 215's to 30's and only have a 3 mph difference at 70.