Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

fuel consumption vs tire size

Featured Replies

what kind of gas mileage could I expect from different tire sizes?

85 hatch GL 1.8 carbed auto trans

what is the stock gas mileage, and how much should I expect if I ran 235/75/15s?

carb'd automatic - bad

 

big tires - even more bad..

 

I'd say 12-14 mpg with the big tires

  • Author
carb'd automatic - bad

 

big tires - even more bad..

 

I'd say 12-14 mpg with the big tires

oh my god, that makes this project SO not worth it :[

I get about 15-20 with 235/75 R15 tires on. It's well worth the 12"s of ground clearance to my lowest points front and rear :)

 

Big tires arent for commuting every day....

Do any of you calculate how far off you odometer is to get a corrected mpg. Several years ago I had 195/70/13 tires .5 inches over stock, 29-32mpg. Then got 185/80/13 that were almost 1.5-inches over stock 27-29mpg and occasionally would bump 30mpg speedometer was 10% off, 50 gave me 55mph. Now run 195/75/14 and 47 gives me 55mph and mpg is roughily 25-27 but odometer is off by roughily 15%. So you could figure 26 mpg times 1.15=29.6mpg. No real change so to speak, but in the case of 27-29-inch tires a person probably would loose 1-2 mpg if corrected for odometer being off just due to their size. Of course with an auto I would say it would be a no go situation or not very fast anyways.

Hmmm then it prolly isnt as bad as I thought.

 

I really dont care what my milage is. Thats kinda what I was getting at. Big tires arent for commuting and saving MPG. They are for offroading. :drunk: I could be getting 8mpg and I'd still run these tires. I'm no stranger to 8mpg town / 15mpg highway... buying gas every day... ugh, big blocks with 4barrels :rolleyes:

  • Author
Hmmm then it prolly isnt as bad as I thought.

 

I really dont care what my milage is. Thats kinda what I was getting at. Big tires arent for commuting and saving MPG. They are for offroading. :drunk: I could be getting 8mpg and I'd still run these tires. I'm no stranger to 8mpg town / 15mpg highway... buying gas every day... ugh, big blocks with 4barrels :rolleyes:

unfortunately I have to think about fuel consumption :[ I'm on a REALLY tight budget and it would be my only vehicle

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.