first trip on tires.

[jps4jeep]

On thursday I put new tires on my YJ. I have about 5 inches of lift, and been driving around on 235-75-15's with aluminum wheels. I went to AR 767 (15x8) and Yokohama geolanders M/T (33x12.5) Friday I went to NH and the whole way up once I hit about 60 mph (not sure cause speedo is not calabrated yet) I get a nice shaking feel. I don't think it is an alignment issue cause the lift has been on the jeep since april. I am thinking a wheel is out of balance.
Would larger tires cause an alignment problem to be magnified?
Has anyone had a similar problem with these tires. I use to have 36 swampers on my chevy and they would never balance cause the tire itself was just out of wack. I have never heard of this on a smaller tire but could it be this?

Thanks folks!

Johnny

 

[Utah_jeepster]

Larger tires can magnify the out of balance. Since your turning a larger radius tire a slight out of balance will show up at higher speeds
A quick trip down to your local tire dealer and having them spin test them at high speeds should show which one os slightly off.
As to alighment ? I do not believe so. check the balance if that doesnt correct the problem.

 

[jhiggins]

Just like he said head down to the nearest tire place and have them balance them for you ....

 

[jps4jeep]

Thanks for the response, I went back and looked at my old tires that I had on the jeep, and my front tires had a small amount of cupping to them so I think it is an alignment issue. I am going to have that done anyways cause I haven't had one done to the jeep since 1999, I think it is about time! Then I am going to test drive, if problem persists, I will go to my friends and get the balance checked.

Johnny

 

[BostonJeep]

how do you reset the spedo after getting new tires on a YJ

 

[jps4jeep]

2003 Rock Crawler Challenge in Alabama

What you need to know is the gear ratio in the rear end, tire size, type of motor transmission and Tcase. I don't know why they (dealership) need to know the motor and transmission but they do. Go down to jeep and give them the info, they give you a new gear that gets put into the tail shaft of the T case. I am waiting to put in new gears and am going to be getting a SYE, so I am just waiting till then to replace. Really not that hard, mild home grown driveway mechanical skills are required but nothing major.