Originally Posted By: artbuc
The spare tire on my 99 Avalon has only about 20 miles on it but it is 13 years old. I am about to replace my tires which are 5 1/2 year old Bridgestone Potenza 960 AS Pole Position with 42k miles. Should I replace the original spare with one of Potenza's? Thanks.
Ours was 12 and we just replaced it with the other four.
Bear in mind that the absolute service limit for many manufacturers is 10 years - regardless of service or storage conditions. Some deterioration is based on mere exposure to atmosphere. A spare will last longer than on a road wheel, but no tire lasts forever.
If you can afford a new spare, why take a chance? You might need it 3-4 years from now, when it's over 15.
It's in the tire shop for four . . . it's easy and convenient to put the 5th on at the same time.
FWIW, you are best advised to NOT mount a directional tire as a spare; a symmetrical or asymmetrical tread allows use on either side. Even as a temp spare, you'll REALLY notice the difference on a backward directional if it happens to be wet the day you need it.
I would put a brand new tire on the spare, but you don't need to put on a $200 UHP. A simple passenger grade tire is enough. As long as it's fresh rubber.
. . .
Side Rant:
I honestly don't understand why so many posters here are so cheap about tire replacement, yet happily pour caviar-priced oils into their high-powered engines.
Tires are the most important part of the vehicle, and the only part that stops it and keeps it from sliding off the road (and sliding into me). It's the last part anyone should cheap out on.
I've been in enough accidents with people running on ancient, rock hard tires with zero traction (who talked like some of the folks here: "there was plenty of tread on my tires, I don't know what happened"), so I'm more sensitive than most to the consequences.
Visuals just don't cut it. I'm no fan of regulation, but Japan and Europe are starting to enforce tire service life rules for safety. I wonder if we should too as part of the basic state safety inspection.