Do the specialized borough cx sport tires have directional tread? There is no marking on the sidewall for the proper direction of rotation.

The tire rubber will crack with age and exposure to the elements. If you look in between the tread pattern you may well find some cracking there as well.

Once cracking in the sidewalls and/or in the tread section appears it is most definitely time to discard those tires.

It sounds like a bad tire, possibly a broken belt. Check the sidewalls and tread of all the tires for bulges. If good it probably is a bad wheel bearing. Try to isolate from where and what side. If the noise gets louder turning one direction but not the other, then more likely a bearing. If it stays constant both directions but gets louder with speed, then suspect a tire.

It really depends on the tires. Some tires have a one-way tread pattern and are only supposed to rotate in one direction (i.e. ones that pull water away from the center of the tire). In this case, you must rotate driver-rear to driver-front and passenger-rear to passenger-front. If you have a symmetrical tread pattern, you should rotate driver-rear to passenger-front and passenger-rear to driver front.

If you post a picture of the tread pattern, I can tell you which you should do.

Zach

Hello,
I do agree with the person who mentioned
" Tire Noise". A few moments spent with a knowledgeable tire dealer will help
in your choice when it comes time for replacement,
Enjoy your Benz. A little homework will quiet it down real nice.
Wayne

Most likely the front tires need to balanced or are worn unevenly. Have all four tires rotated and balanced.

Laura, from factory the car came with 215 x 55 x 17``tires. The actual number is printed on the sidewall.
< This means you have 17`` rims, with 215 mm tire tread width and the sidewall height of the tire is equal to 55% of the tread width. This is referred to as the tires profile...
If by chance you are shopping for snow tires you can install a complete 16`` winter wheel set , tires and rims with the same overall outer diameter as a 17`` set, because the 16 or 17 only defines the hole size in the tire ....however the sidewall height and tread width would be different on a 16``tire.

I am not sure I can help you much, I have bought, sold, used and abused tires all my life so I will try to help... First if you bought big aggressive tires that look cool, don't expect them not to make noise. Second, if you have ever run them underinflated and the cupping and adverse wear has started the only thing that may help reduce but not eliminate noise it is tire rotation.... Third aggressive tread is always noisy... And gets noisier with age. You have already aligned the truck, that is a step in the right direction. Keep tires properly inflated and rotate them often to square tread back up. Once cupping is minimised noise should go down. Just so you know I have learned about tire through a lot of personal experience. Don't by an aggressive tread if 98% of the time you or on the highway for the once or twice you may go off road... It's not worth it...

it could be the type of tires. depending upon tread design an purpose of tire. ie mud and snow, high performance. i would ck to see if the tires are directional. if they are and someone unwittingly rotated the wrong it would do this. you should be able to tell by looking at the sidewall. there should be an arrow showing proper rotation.

Make sure the tire pressure is proper..
Be sure to rotate them every 6-k miles or so..
If they are not rotated - the tread could get the fish-scale effect..
Run you open hand gently across the tread in the direction of up and down - not side to side..
If you feel the fish-scale effect - it is from not rotating them and that is what is causing the humming noise..
Rotate them asap.. if it has been TOO long - the "humming" might not go away until your next set of tires..

Good luck ;o)