Author Topic: When to replace tires with age cracks  (Read 1271 times)


  • Pencil Stache
  • ****
  • Posts: 518
When to replace tires with age cracks
« on: July 08, 2019, 10:21:07 PM »
My ancient, but awesome and indestructible 1991 Volvo 740 SE (special edition turbo), currently has four Goodyear Eagles bought new in October 2015. I checked the week/year of manufacture on the sidewalls before I agreed that my mechanic would put them on my car. All were manufactured within six months of purchase.

Now, living in SoCal (a hellhole), they are showing age cracks on the outer treads. There are no cracks on the sidewalls. Given that the tires are less than four years old, and the crack distribution is limited, is it time to replace them already?? (Treadwear is minor as I drive only about 7000 miles a year) Articles online claim that 10 years is the absolute maximum for tire life, but replacemet every six years is safer. Still, can the SoCal sun, and ground-level ozone (worst in the nation) fry my tires in less than four years? Should I replace them now?

Also, I've heard that tire sealants can prolong life of tires with age cracks--is this worthwhile? I will be seeing my mechanic tomorrow for routine maintenance. He is a very good mechanic, and honest, but still, these guys are always pushing you to spend more money! Would appreciate any thoughts on this. Thanks!
« Last Edit: July 08, 2019, 10:27:49 PM by ObviouslyNotAGolfer »


  • Handlebar Stache
  • *****
  • Posts: 1771
  • Location: Here & There
Re: When to replace tires with age cracks
« Reply #1 on: July 09, 2019, 05:47:16 AM »
I'd make sure that the spare is in good condition & well inflated.  You could wait until one fails, then replace them all.  But that means you'll be dealing with a flat tire, sooner or later.  How's your Karma?  ;)

I wouldn't replace them with Goodyears again. 

Let us know what your honest mechanic says.


  • Walrus Stache
  • *******
  • Posts: 6674
  • Location: Arizona
Re: When to replace tires with age cracks
« Reply #2 on: July 09, 2019, 06:53:52 AM »
Tires typically need to be replaced every 5-6 years. Heat, sunlight, ozone, and exhaust gases accelerate the aging process. Infrequent use can also increase the chance of cracking. You pretty much have the worst case scenario environment for tires. However some light cracking doesn't mean you need to replace the tires immediately. Is the cracking in the grooves of the tread or on the part that makes contact with the road?


Wow, a phone plan for fifteen bucks!