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alexshock · 02-20-2021, 01:41 PM

What is better for fuel economy: tire weight or LRR index?

Can those tires with bad LRR still be efficient if they are lightweight?

I'm asking this question, as I started some wheels modding.
I'm going to switch from 205x55x16 to 195x65x15 (more details here: https://ecomodder.com/forum/showthre...tml#post642248).

So average tire weight in that size aprox. 8.5-9 kg., most ecotires are 7.5 kg., but I found some Fulda EcoControl HP2 which are declared to be 6.3 kg. (I have not measured them yet, but specification is like that.)

So, total tire weight can be reduced by 2.2 kg. per corner, 8.8 kg. total!

While they are labeled as "EcoControl", EU LLR index is C-E

WTF? Can that be considered as ECO?

02-20-2021, 01:41 PM	#1 (permalink)
alexshock EcoModding Apprentice Join Date: Oct 2020 Location: Kyiv, UA Posts: 149 Auris - '16 Toyota Auris Team Toyota 90 day: 40.54 mpg (US) Hyundai - '20 Hyundai i30 90 day: 29.37 mpg (US) Thanks: 64 Thanked 51 Times in 44 Posts	LRR vs. Weight What is better for fuel economy: tire weight or LRR index? Can those tires with bad LRR still be efficient if they are lightweight? I'm asking this question, as I started some wheels modding. I'm going to switch from 205x55x16 to 195x65x15 (more details here: https://ecomodder.com/forum/showthre...tml#post642248). So average tire weight in that size aprox. 8.5-9 kg., most ecotires are 7.5 kg., but I found some Fulda EcoControl HP2 which are declared to be 6.3 kg. (I have not measured them yet, but specification is like that.) So, total tire weight can be reduced by 2.2 kg. per corner, 8.8 kg. total! While they are labeled as "EcoControl", EU LLR index is C-E WTF? Can that be considered as ECO? Last edited by alexshock; 02-21-2021 at 05:04 AM.. Reason: Typos