Mastercraft tires?

might take a few thousand miles. have you done any further research?

 

when i had new tyres put on the rear of my wife's 08 hycam, i told the guy i wanted lrr reasonable price quiet tyres. he put on master craft (no idea what model) and they seemed okay. i didn't notice a reduction in mpg's. prius might be more sensitive.

 

When I google that tire the first two hits I get don't give me much confidence that they are particularly LRR.

Mastercraft Avenger Touring LSR Passenger & Light Commercial Tyre Reviews Australia www.mastercrafttires.com.au
This user review claims poor fuel economy.

Mastercraft Touring LSR Car Tyre Guaranteed to Last up to 80,000 km
This from their Australian distributor make lots of claims, but very little of them related to LRR.

Given the combination of what the OP is reporting and what 2 minutes of google searching showed up, I'd definitely have my doubts that these tire are really LRR.

Unfortunately LRR is to some extent a marketing term these days, so nearly all tires (even non LRR ones) will mention something about LRR somewhere in their marketing blurb.

 

Master craft is made by cooper tire. I have them on my other car and they are excellent. IMHO

My prius has Yokohamas

 

Yeah that's a big percentage drop, 13%. You might find that you regain some of that as they break in, but with an initial loss that large I think you'll still be left with some deficit.

BTW. Was there any other work done (or changes made) to the car coincident with getting the new tires? In particular, anything involving disconnecting the 12V battery.

 

Ah, it always seems to be the case when chasing MPG issues that there's more than one factor at play.

Some people do experience loss of reported MPG after having battery issues like you stated. You definitely lose historical data that can effect either the fuel economy and/or how accurately it's reported. I'd at least check that the battery is still in good health, and if so then wait for a few more full tanks worth of fuel to see how much it bounces back as the ECUs relearn.

Then I suppose we'll have another complicating factor, as I assume the weather is finally starting to warm a little up there in "almost Canada".

 

Ok, it sounds like it must be predominately due to the new tires then.

Like I said before, saying "LRR" can be used as something of a marketing term these days. I mean try to find a flashlight battery that doesn't say "long life" or a set of shock absorbers that doesn't say "heavy duty" if you know what I mean.

 

i suppose with 150k, it could be a coincidental hybrid battery issue. or maybe the 12v is failing. why not test it?

 

Sounds good. Those Mastercraft tires might be long wearing, but that's not much benefit if they're costing you the equivalent of a set of new tires every 25000 miles in extra fuel costs.

I just got 45000 miles (75000 km) out of a set of EP100's (a summer tire). The EP422's are reputed to be somewhat longer wearing and only slightly more rolling resistance than the EP100's.

BTW. After you've had the new tires for a few weeks could you please update us on how much your MPG recovers. First hand comparisons like that are really useful.

 

I have the Mastercraft LSR's too - they came with the car (they were brand new at the time).

They do not return good mpg's. I have to inflate them to 44f/42r to even give me a running chance at getting over 45mpg.

I dont rotate them and I take corners real fast, lol. Im hoping they will wear out to give me an excuse to buy Ecopias!

 

That's a great result after just 389 miles.

I wouldn't get too excited about the Fuelly figure though. Gas pump averages are notorious for bouncing up and down from one tank to the next.