New Mazda user and realized when I thought I posted this question here, it was actually another forum site that probably has a bit less CX-9 users, etc, than here. Oops.
So I just bought a 2016 CX-9 Sport with 74k miles yesterday and unfortunately it had 3 different brand tires on it and the two newest ones that actually match are Westlake (not great tires). On the way home from the dealer, I was driving about 80 MPH on the interstate and noticed significant vibrations that I could really feel in my legs and butt and felt like it was coming from the rear of the car. Oddly it wasn't a constant vibration, but something you could notice go in and out every 1 second or so. I didn't notice it 60mph and lower. Even though the west lake tires are brand new, I am replacing all 4 tires with the Pirelli Scorpion Zeros (255/60/R18), which obviously in the process of the install, they are balanced. Hoping solves it. Wondering if i should spring for an alignment while they are at it. I hate to replace tires with plenty of tread left, but I know running 3 different tires isn't a good thing to do.
Any thoughts or suggestions? I did have a Mazda dealership check out the car before i bought it from a third party dealership, but was only a 30 minute inspection. They did point out the tire differences and a couple other small issues. You can actually see the video here from the mazda tech: 50472. I already have a new screen cover for the infotainment on the way too.
So I just bought a 2016 CX-9 Sport with 74k miles yesterday and unfortunately it had 3 different brand tires on it and the two newest ones that actually match are Westlake (not great tires). On the way home from the dealer, I was driving about 80 MPH on the interstate and noticed significant vibrations that I could really feel in my legs and butt and felt like it was coming from the rear of the car. Oddly it wasn't a constant vibration, but something you could notice go in and out every 1 second or so. I didn't notice it 60mph and lower. Even though the west lake tires are brand new, I am replacing all 4 tires with the Pirelli Scorpion Zeros (255/60/R18), which obviously in the process of the install, they are balanced. Hoping solves it. Wondering if i should spring for an alignment while they are at it. I hate to replace tires with plenty of tread left, but I know running 3 different tires isn't a good thing to do.
Any thoughts or suggestions? I did have a Mazda dealership check out the car before i bought it from a third party dealership, but was only a 30 minute inspection. They did point out the tire differences and a couple other small issues. You can actually see the video here from the mazda tech: 50472. I already have a new screen cover for the infotainment on the way too.