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kirkerik · 02-22-2013, 10:12 AM

Hey all,

I was looking to get some tires for my 86 yota pickup 4wd. It has a 4cyl. 5 speed tranny. Of course i am looking to get the best mpg.

A 235/75/15 is about 29" diameter and weights 35-37 lbs.

A 225/75/15 is about 28" diameter and weights 27-28 lbs. (stock size)

My question what would give the best mpg? The larger tire making the gears a little taller but heavier? OR The smaller and lighter tire with stock gearing.

I currently have some old mismatched 235's on some steels, but the new tires will go on some OEM alloys. I am currently getting about 23 - 24 maybe?? At best.

Thanks,
Kirk

02-22-2013, 10:12 AM	#1 (permalink)
kirkerik EcoModding Lurker Join Date: Nov 2011 Location: Central NY State Posts: 14 Thanks: 1 Thanked 0 Times in 0 Posts	Weight vs Diameter of Tire?? Hey all, I was looking to get some tires for my 86 yota pickup 4wd. It has a 4cyl. 5 speed tranny. Of course i am looking to get the best mpg. A 235/75/15 is about 29" diameter and weights 35-37 lbs. A 225/75/15 is about 28" diameter and weights 27-28 lbs. (stock size) My question what would give the best mpg? The larger tire making the gears a little taller but heavier? OR The smaller and lighter tire with stock gearing. I currently have some old mismatched 235's on some steels, but the new tires will go on some OEM alloys. I am currently getting about 23 - 24 maybe?? At best. Thanks, Kirk