redcamaro72

I just had these michelin as plus tires 235/45/17 installed and have driven 200 mles on them and I have noticed a 4 mile per gallon drop. Is this normal or is there a brake in period. I have 35 psi in each tire. Should I increase my tire pressure?

Turbonut

iTrader: (1)

A non OE tire will have more rolling resistance, but it is usually minimal, meaning maybe 1 MPG if under lab conditions. I'd give it some time and check once again as a 200 mile window is too restrictive.

redcamaro72

I hae put 300 miles on thnew tires and I have lost 6miles per gallon. I talked to michelin and they asked what pressue I was running and I told them it was 35psi all around. they had the dealership lower it to 30 psi. I dont see where lowering the pressue is going to help bit I have 30 days to decide what to do so can smone steer me on what tire to get that will improve my mpg with at least 30,000 mile warrenty.

redcamaro72

I have put 300 miles on thnew tires and I have lost 6 miles per gallon. I talked to michelin and they asked what pressue I was running and I told them it was 35psi all around. they had the dealership lower it to 30 psi. I dont see where lowering the pressue is going to help a bit but I have 30 days to decide what to do so can someone steer me on what tire to get that will improve my mpg with at least 30,000 mile warrenty.

Elegant TYPE S

iTrader: (2)

I thought raising tire pressure would increase gas mileage.. weird. And the Michelins you have are heavier tires than stock tires..which is the reason for the drop in gas mileage. The benefit of those tires is that I believe they have a ridiculously high tread wear rating.. like 500 or something like that.

georgegiorgio

Anybody having Michelin Pilot Sport PS2?

DrMooCow

I have the Michelin Pilot A/S + on my Type S with the stock 17" rims. I didn't see any drop in my gas mileage. I'm running it at 32 PSI all around.

I've had these tires for about 2 months now and put over 3000 miles on them and haven't had any issues with it.

As for the Pilot Sport PS2, I have that on my 535i. I personally am not a fan of those tires. I will most likely get the A/S + when I wear out the PS2 in the future on my 535i.

SouthernBoy

My '04 manual came with the Bridgestone EL-42's from the factory. This is a grand touring tire with the following important specs;

24 pounds each
25.5" in diameter
817 revs per mile

The Michelin Pilot Sport A/S Plus tires have these numbers for the above specs;

24 pounds each
25.4" in diameter
821 revs per mile


The difference in these two tires is the tread compound and design. A grand touring tire is designed for touring. That generally means a quiet and comfortable ride with maximum fuel economy from the tire. An ultra high-performance all season tire is designed for both bad weather performance and to enhance dry condition use. The tread pattern is far more aggressive and therefore, more road resistance than a grand touring tire.

My first set of replacement tires was the Michelin Pilot Sport A/S in the stock size. I immediately noticed greater resistance and a drop in fuel economy (around 1.5 MPG in town and close to 2 MPG on the highway). My second set of replacement tires was the Michelin Pilot Sport A/S Plus tires, also in the stock size. I have seen the same difference in fuel use with these as I experienced with the last set of Pilots.

I run 35 psi in front and 32 psi in the rear as recommended by Acura. For the record, my winter in town mileage averages a little over 24 MPG and my winter highway comes in at 32 MPG.

Inaccurate

I am currently running the PS2's. The most soft compound tire that I ever owned. I would say that they are like a R compound tire (however, I have never had any real R compounds to really say for sure).

They stick to the road very well. However, they are wearing EXTREMELY fast because of the soft compound. I am willing to replace them often to enjoy the awesome grip although.

enigmaos

iTrader: (4)

I have PS2's as well. Very soft tires (their treadwear is 220) and lots of traction/grip. however, they wear out fast due to soft compound as stated by Inaccurate.