1998 Sierra 4x4 Tire Size Increase

Wyatt S

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I'm Wyatt and I'm new to the site. I have few questions and any information would be great.

I drive a 1998 Gmc Sierra K1500 4x4 with the 5.7L and a 3.73 rear end. The truck is mechanically bone stock. Came stock with 245/75/16 tires. I've already increased to a 265/75/16 and suffer slight difference in gas mileage. I'd like to go to a 285/75/16 and was looking for some help on what others running similar setups are getting on the road. Right now I'm getting about 14-14.5 at best.

I'm looking at getting Yokohama Geolandars AT/S so any information on those tires and reviews would also be very helpful.

Thanks for information y'all can provide!
 


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