How often to replace tires time wise?  I know they dry out but what is the average life span time wise before replacing?  I bought my bike with very low miles on it, but it's an 07' going on at least 6 years on the rubber. I've read articles ranging from 4 to 7 years that tires last time wise.  I'm thinking I need to buy my girl some new shoes this year  

5 years usually or until the tread depth is 1/32"... I also don't feel safe with those cracks.

No sign of cracking yet and the treads are fine, I guess I'll check it out at the end of the season.  

I just replaced my old tires with plenty of tread left on them. They were cracked. The ride quality on the new tires/tubes is much better.

Tires dry out fast here in the desert... I try to use them up in under 4 years.
Other places may go 6 or so...
A little surface, heat checking on the sidewalls ain't so bad,.. 'till it starts to get deep...
...keep in mind,... the problem here, is that a tire has petroleum in it... that's what evaporates out... and when it's gone, tires don't stick anymore...
...(that's also what moves around, and creates flat spots, if your bike sits for too long without rotating)...

If you dig a thumbnail into a corner edge of tread in a good tire,...it will smoosh a bit, and leave a slight nail imprint... (like a new pencil eraser)...
A dried out, dead tire, will feel hard,...more like Tupperware, or an old pencil eraser that don't work anymore...
A tire like that, has no traction at all,.. and is dangerous...

Tires start drying out, from the day they are made...
... even on the shelves at the store...(they're not supposed to sell tires stocked more than 2 years)...
(check date codes on new tires)...

A 1 yr old tire worn down to a slick, is 10 times better than a 10 year old tire with full tread...
Ditch them old tires... ...

Tread ain't there to apply traction,... the meat of the tire has all the traction,... tread is just there to move aside rain, sand, or mud, to get the tire down to ground surface... a slick has the most traction...
If you ride in deep sand or rain a lot,... you need to watch your tread depth more than us, "fair weather" riders...

That wasn't a "stat" just an experienced guesstimate... ...

It's axtually 11.26 times better... (now, that's a stat I POOMA'd)... ...

Good tires stored properly will last almost indefinitely. The "fresh" 16 inch wide whitewall rubber for my 1949 truck was made in 1960, 61 and 62...  "Show" tires, the real ones are fresh 15" radials...

Motorcycle tires? If they hit 5 years old, consider them garbage and head for the burn out contest. Will they last longer? Maybe, depends on where you live, how aggressively you ride, the road surface (chip seal, smooth asphalt, brushed cement)... Were they stored correctly, shelved correctly, kept "tire shine" free for their entire service life (tire dressing actually causes sidewall cracking)...

averred


a·ver
[uh-vur] Show IPA
verb (used with object), a·verred, a·ver·ring.
1.
to assert or affirm with confidence; declare in a positive or peremptory manner.
2.
Law. to allege as a fact.



Being the pragmatist I am, I like having new words in my arsenal.
I Like this one..
Now, how long till I forget it?