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Tire compatibility

Tiny
BOB01
  • MEMBER
  • 2003 CHEVROLET TRAILBLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Can I use an LT245 75R17 in place of a P245 65R17 tire on a 2003 Trailblazer?
Saturday, April 13th, 2019 AT 5:58 PM

3 Replies

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

Yes. As a matter of fact I would recommend using the "Light Truck" tires as opposed to the "Passenger car" tires as the first letter(s) in the tire size state.

Thanks,
Alex
2CarPros
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Saturday, April 13th, 2019 AT 6:30 PM
Tiny
BOB01
  • MEMBER
  • 3 POSTS
Awesome! Thank you very much.
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Saturday, April 13th, 2019 AT 6:32 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,355 POSTS
Welcome to 2CarPros.

Just wanted to jump in here. Make sure the LT tire will not rub under the fender. When you change from a 65 to a 75, the tire will be taller and narrower. As far as the LT, I agree with Alex. An LT has a heavier sidewall which is designed to carry more weight. It can be up to a 10 ply sidewall. On the other hand, a P rated tire (passenger tire) will have a 4 ply side wall. It isn't designed for as much weight. Also, the change in size may have an affect on how the vehicle handles.

Let me know if you have other questions.

Joe
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Monday, April 15th, 2019 AT 8:16 PM

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