2021 CX-5 Bumpy ride on new tires

[konstnn]

Hi all! I am having an issue with bumpy ride after installing new tires which are Goodyear Assurance ComfortDrive. Tried low tire pressure to the point the sensors start complaining. On recommend tire pressure it's unbearable. Around 30psi it is better yet far from wanted. The car feels kind of low magnitude bumpy, almost like shaking. Not bouncing like with dead shocks but shaking up and down. Responds to EVERY single asphalt crack, EVERY road imperfection, on any speed. I was happy with the ride before, on stock tires.

My other car is stiff(er) sedan, CX5 was a comfortable couch in comparison. Not anymore. I would say it is a coincidence and suspension is at fault, but the car only has 22K miles. Makes no sense and I can't explain. Hearing my wife earrings jiggle is fun but the new bumpiness is annoying. So I don't know what to do. I can try replacing the tires again but afraid it won't fix the issue. Same with replacing shocks.. Don't mind working on the car unless it not useless.

Has anyone experienced anything similar that new tires change the car ride dramatically?

 

[cz5gt]

if it changed after the tires ...well must be the tires. Some are harder compound than others and absorb road imperfections worse.
Could it also be very bad balance?

For example I run michelin PS4 all season now and its more bumpy with those but they stick and dont slip.
With the stock Toyo it was comfortable but the tires didnt grip well.

 

[a69mach1377]

Yeah, sounds like a tire dealer issue...

 

[SparkYellow]

Was the new set balanced/installed at a trusted shop by an experienced technician?

Last year I had a terribly bumpy ride after DIY tire rotations. Newbie mistakes were made.

 

[MrMcE]

I just bought a '21, dealer installed new tires and allegedly balanced them. Ride was bumpy.
Took it to Discount Tire, they didn't charge anything for a rebalance (properly done with road force balancing) and car smoothed out completely. It's the best first shot at fixing the issue.
The tire report showed pretty big imbalances before the fix. You could've just gotten unlucky with a lazy/amateur tech installing your new tires and did a poor job with balancing.

 

[BoomerZoomr]

If I wasn’t happy after paying $$$ for new tire installation, I would go back to the business and ask for a solution.

 

[SparkYellow]

I removed, rotated, and installed the wheels/tires using hand tools while the car was on the lift. The ride home was awful so I torque-tightened the nuts the next morning. It didn't help much. The tire shop always uses an impact wrench to tighten the nuts while the wheels are off the ground and torque-tighten once they're on the ground.

In 2024 I found a great deal on Bridgestone tires that turned out to be new old-stock (DOT code in 2020 and 2021.) They were half the price with half the life. It was not a bad deal for me though because I average 2K miles/month. I wonder if other aged new tires don't ride like new.

 

[dunhillmc]

what are the load and performance ratings of the new tires. How do those compare to the ones you replaced?