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  1. #1

    Default increase tire size????

    My 2001 Suburban 1500 4x4 has stock 16" wheels with 245-75r-16s and I was debating on getting slightly wider tires. My current tires are about shot and I was thinking of upgrading to 265-75r-16s. TireRack has an OEM optional size of 275-70r-16 but I want to keep my sidewall height of 75. I have a friend that has a 2002 Tahoe Z71 and his truck has 265-75r-17s. I still have the OEM aluminum 16x7 wheels. Will the bigger tires be a problem on my completely stock truck?

  2. #2
    Eddie Z71's Avatar
    Join Date
    Mar 2009
    Colorado Springs, CO
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    I don't think you will have a problem. I am running the 265/75/16's on my stock 2000 Tahoe with no problems. I did have a set of wheels and tires off of a Avalanche that were 265/70/17's, and I had plenty of turning clearance. You can always get the guy's at the tire shop to mount one for you to see how it will look. I hope this helps you. Good luck!
    Eddie , 2000 Chevy Tahoe Z71 (old style)

  3. #3


    I went to the 265/75/16 on my 98 surburban 4x4 thay are mud grips from pep boys but made by cooper and goen down the road thay have a nice low zing above 45 mph.That was when it was stock and i had no problems.
    1998 SURBURBAN LT FULLYLOADED 6 INCH LIFT AND 35 INCH MUDDERS-1985 M-1028 MILITARY TRUCK UNDER 38 K MILES NO RUST OR DENTS RUNS LIKE NEW.2004 XL-1200R 1 OF 7 MADE BY HARLEY WITH 100 HP-1977 XL-1000 NAMED PAW PAW..We own only 4x4s dont know why just turned out that way the other 2 aint chevy so i wont list.1987 MONTE CARLO SS 555 CI BIGBLOCK 675 HP 700 QT BUILT BY DOUG HERBERT IN NC.

  4. #4


    There were 265/75/16s on my 97 surburban 4x4 when I bought it 11 years ago. I've put more than 160k miles (and a couple of sets of tires) on it since and have never had an issue with tire performance.
    '97 K1500 Suburban 189,000 miles

    Also ... 2007 Camry, 2002 Accord, 2001 Camry, 1999 Pontiac Montana
    (lots of kids)

    Previous: 1996 Camaro, 1987 Saab, 1995 Lumina, 1976 Alfa Romeo, etc

  5. #5


    I have an '03 burb with 285/75-r16. Roughly 33" tall and 11.5" wide. The right front rubs the sway bar a little on left hand turns. Not my choice of tire. Bought it with them on. Its hurting my fuel milage and towing capacity since I have 3.73 rear gears. The 265/75-r16 will be around 32" tall. Even though the 75 is the same the actual height will increase as the width increases. Tire Rack has the specs on the tires.
    2003 Suburban 2500 LT, 6.0l Volant cai. 3.73 gear. Mobil 1 syn oil

  6. #6
    Sr. Engineer Dana W's Avatar
    Join Date
    Dec 2011
    Chuluota, Florida


    Um, the "75" is not the sidewall height. It is the tire height to width ratio. The wider the tire, the taller "75" will be. 75% of 275mm is bigger than 75% of 265mm.

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