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lasitter · 07-10-2014, 03:09 PM

Of course most of the posts here are not about old F-150 trucks, but that's what I have, and one of the mods I've been studying for a long time is the switch to LRR tires.

I have this sense that the size of the rubber patch on the road matters in terms of fuel economy, and so I was wondering what the difference might be (same LRR brand, etc.) between a tread width of 7.2" vs 6.2"?

General makes the "Grabber HTS" which is about the only option for LRR on my 1996 Ford F-150 in the 235/75R15 size.

I think it should be required, but there is still no coefficient of rolling resistance available on a tire by tire basis.

07-10-2014, 03:09 PM	#1 (permalink)
lasitter EcoModding Lurker Join Date: Mar 2011 Location: Ludlow, MA, USA Posts: 56 Thanks: 1 Thanked 0 Times in 0 Posts	Light truck LRR tire question ... Of course most of the posts here are not about old F-150 trucks, but that's what I have, and one of the mods I've been studying for a long time is the switch to LRR tires. I have this sense that the size of the rubber patch on the road matters in terms of fuel economy, and so I was wondering what the difference might be (same LRR brand, etc.) between a tread width of 7.2" vs 6.2"? General makes the "Grabber HTS" which is about the only option for LRR on my 1996 Ford F-150 in the 235/75R15 size. I think it should be required, but there is still no coefficient of rolling resistance available on a tire by tire basis.