yober37

I am about to change my front tires
The original tires that I have are
Michelin PILOT HX MXM4 225/45R17.
Costco sells Michelin PILOT SPORT A/S 3+ 225/45R17.
Question: should I replace my tires with the original HX MXM4 or should I go with Sport A/S 3+ ?

xsever

The HX MXM4 is an All-Season Grand Touring tire while the Sport A/S 3+ is an Ultra High Performance All-Season tire. If you have the MXM4 in the rear, you should just stick with the same tires in the front and save the money for something else. If you feel the current tires are not performing well given your driving style, then you could go with the A/S3+ on all 4 corners. More money but more performance.

yober37

I end up replacing my front tires with the original HX MXM4.
I usually kept the tire pressure as per the info on the chart by the driver’s door, i.e. front at 36psi and rear at 41psi.
The mechanic who replaced the tires stated that the tire pressure information on the door is for a maximum loaded car and suggested that I should maintain 34psi pressure for front and rear since I don’t load my car.
Question : should I follow the chart information or mechanic’s suggestion?

yober37

Didn’t get any reply in my question.

xsever

I use 36 front and 41 rear and I have no complaints. Honestly, even though I drive in a spirited manner on windy mountain roads, I can't really notice a difference between 36 and 34.