# Tire sizes **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [April 11, 2009, 6:57pm UTC](https://community.cartalk.com/t/tire-sizes/28990 "2009-04-11T18:57:54Z")\ **Posts on this page:** 4\ **Page:** 2
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [April 16, 2009, 1:01pm UTC](https://community.cartalk.com/t/tire-sizes/28990/21 "2009-04-16T13:01:34Z")
Might just be semantics. I’m looking more at the internals and how it’s mechanically applied as opposed to the overall function. I do agree it does seem to be the BEST of both systems…although I don’t have any practical experience with it. ---
**Author:** ![Loafer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/loafer/32/28_2.png) [@Loafer](https://community.cartalk.com/u/Loafer)\ **Post date:** [April 16, 2009, 3:39pm UTC](https://community.cartalk.com/t/tire-sizes/28990/22 "2009-04-16T15:39:30Z")
I would buy two tires that are the same size of the tires you have now; 235/75/R15, which are less than an inch larger in diameter than the factory tires. ---
**Author:** ![Seraph](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@Seraph](https://community.cartalk.com/u/Seraph)\ **Post date:** [April 16, 2009, 6:03pm UTC](https://community.cartalk.com/t/tire-sizes/28990/23 "2009-04-16T18:03:57Z")
It isn’t Semantics. AWD systems use a center differential. The Nissan Pathfinder “All-mode” 4WD is a part time system (which engages automatically when it detects slip), and doesn’t. The lack of a center differential makes a difference. ---
**Author:** ![MikeInNH](https://avatars.discourse-cdn.com/v4/letter/m/a587f6/32.png) [@MikeInNH](https://community.cartalk.com/u/MikeInNH)\ **Post date:** [April 16, 2009, 11:36pm UTC](https://community.cartalk.com/t/tire-sizes/28990/24 "2009-04-16T23:36:41Z")
I wasn’t sure of the mechanics of the Nissan system. I agree it’s NOT a AWD system…It may act like one but it isn’t mechanically a AWD system. [Previous page](https://community.cartalk.com/t/tire-sizes/28990.md?page=1)