Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

james · 11-28-2008, 02:17 AM

I put 2 sumitomo htr t4 LRR tires on my 94 vx a couple of weeks ago. It makes a much larger difference than I would have guessed. The first tank has yielded 62.6 MPG and this one looks similar so far. I will have to do a few more tanks and see what she gets in the summertime to really be sure of the exact benefit. This 62.6 MPG included carrying a several hundred pound load for part of the tank, and cold weather, snow and ice. My guess so far is that they make a 6-8 MPG difference. that is only for 2 tires! I guess my old ones were cheap, damaged, too large, and not LRR.

The car stays in lean burn much longer. Part of this is because I switched from 175/70/13 to 165/70/13, making the engine spin a little faster. It drives smoother, faster, and stays in lean burn on the highway almost the entire time.

11-28-2008, 02:17 AM	#1 (permalink)
james EcoModding Lurker Join Date: Feb 2008 Location: Ithaca, NY Posts: 34 Low Roller - '94 Honda Civic VX 90 day: 52.85 mpg (US) Thanks: 0 Thanked 0 Times in 0 Posts	VX benefits from LRRs I put 2 sumitomo htr t4 LRR tires on my 94 vx a couple of weeks ago. It makes a much larger difference than I would have guessed. The first tank has yielded 62.6 MPG and this one looks similar so far. I will have to do a few more tanks and see what she gets in the summertime to really be sure of the exact benefit. This 62.6 MPG included carrying a several hundred pound load for part of the tank, and cold weather, snow and ice. My guess so far is that they make a 6-8 MPG difference. that is only for 2 tires! I guess my old ones were cheap, damaged, too large, and not LRR. The car stays in lean burn much longer. Part of this is because I switched from 175/70/13 to 165/70/13, making the engine spin a little faster. It drives smoother, faster, and stays in lean burn on the highway almost the entire time.