LRR (low rolling resistance) tires - Green Seal report & list

[CapriRacer]

Originally Posted by rmay635703

Sorry to dredge up an old thread, but beyond tire retailers saying whether a tire is considered LRR or not, has that law actually done anything?........

The law was never enacted. They couldn't resolve some of the technical aspects. Besides, the Federal Government stepped in and made a proposal - and that is still being worked on. The problems are quite thorny and not easily resolved.

I expect some movement in 2015, but it's still has some difficult technical hurdles to overcome.

[rmay635703]

Odd that euro zone could.

I wonder if this tire could be imported

Continental Conti.eContact 215/55 R17 98V XL - mytyres.co.uk

Only one with an A rating in europe for fuel economy.

[gone-ot]

Part of the Gooberment problem is the HUGE variability between the many different road-load dynometers that are used to measure tyre coefficients. Too much variation even amongst dynos from same manufacturer.

[NeilBlanchard]

They should just do a coastdown test, like this:

[youtube]https://

[RPM]

This is how they measure rolling resistance in Europe (page 58): http://www.unece.org/fileadmin/DAM/t...r117rev.2E.pdf

Is it a good procedure (I don't know enough about tires to say)?

[gone-ot]

See info about "correction" between different dyno's on paragraph 6.3 on page 66.

[Arragonis]

Originally Posted by rmay635703

Odd that euro zone could.

I wonder if this tire could be imported

Continental Conti.eContact 215/55 R17 98V XL - mytyres.co.uk

Only one with an A rating in europe for fuel economy.

I have ContisportContact on my Passat and they are very good for coasting. That tapped Mrs A's Octavia (same car, slightly smaller) has Michelin Primacy HPs on it, which was what we had on the Prius. In terms of grip the Michelines are better, but ride is better on the Contis.