Subaru Outback Forums banner
1 - 2 of 6 Posts

· Premium Member
(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
Joined
·
19,220 Posts
what is the weight difference between stock vs your ideal rim/tire combo?

rule of thumb...4lbs of rotating mass ~= 1hp.

and that's before figuring areo drag.
 

· Premium Member
(formerly) 03 H6 OBW , (presently) 06 WRX Sportwagon & 2021 Honda CR-V
Joined
·
19,220 Posts
there's a good amount of tire reviews at TireRack.com , maybe at Discount Tire's site too.

hopefully some off-road type folks will respond. Or, try your question at ultimatesubaru.org .

in general, increased mass is detrimental due to inertia so, it's very bad on stop&go driving.

aero drag starts becoming a serious issue after 'about' 50 mph or so . It increases as a square of the velocity so, if you are at highway speeds a lot, that could be an issue.

dunno if anyone can say how much of a hit to mpg you will take.
 
1 - 2 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top