# WORST tire brands **URL:** \ **Category:** General Discussion\ **Created:** [December 17, 2022, 5:56pm UTC](https://community.cartalk.com/t/worst-tire-brands/187973 "2022-12-17T17:56:59Z")\ **Posts on this page:** 1\ **Showing post:** 46
**Author:** ![JoeMario](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@JoeMario](https://community.cartalk.com/u/JoeMario)\ **Post date:** [December 22, 2022, 4:09pm UTC](https://community.cartalk.com/t/worst-tire-brands/187973/46 "2022-12-22T16:09:48Z")
re: “the Firestone problem” of years ago. Wasn’t it due to this? > [@Driving with a slightly bulged tire is dangerous?](https://community.cartalk.com/t/driving-with-a-slightly-bulged-tire-is-dangerous/181365/36): > > And just so everyone knows, the problem with the Firestone tires in 1978 was a chemical they (and everyone else) used to promote adhesion of rubber to steel - HMT (hexamethylenetetramine). In the presence of water, it turns into an acid - and it turns out that water vapor can diffuse through rubber. Firestone was the last to discover the problem and replace that chemical - and that’s why the successor to the Firestone 500, (the Firestone 721) also had the problem. The way the company handled… --- _[View the full topic](https://community.cartalk.com/t/worst-tire-brands/187973)._