After how many miles should you replace your tyres?

[Welsh wheels]

My current set of Kenda Kriteriums are starting to rack up some serious mileage, they've done over 1500 miles now. I was checking them yesterday and I can't see any visible signs of wear but I was wondering is there a point at which you should replace your tyres even if they don't appear worn?

 

[Heigue'r]

I got 1400 miles out of a set of pr3 giant tyres and then it was like they fell off a cliff...flatted out pretty rapidly and started getting punctures every few days having had none in 1400 miles.Some tyres have an indicator on them...when this is gone,time for new

 

[Tin Pot]

Apparently they have two holes I n them, once they have run smooth it's time to change (Continental anyway)

 

[Tin Pot]

Here's the holes in question, I've probably done about 2000km, complete guess, in two years on these.

 

[vickster]

When you start getting punctures, when they look worn out/damaged or when you fancy a change

 

[S-Express]

Quote 1

I was checking them yesterday and I can't see any visible signs of wear

Quote 2

I was wondering is there a point at which you should replace your tyres even if they don't appear worn?

See quote 1.

 

[Welsh wheels]

Having said that although I can't see any wear on the surface of the tyre, there are two strange line/cracks on the bottom of the sidewalls, one on each tyre. I can't tell if they are wear or something else. I have attached a picture, hopefully someone will be able to help me identity what they are.

 

[KnackeredBike]

After 8,134 miles.

Or when you start to get frequent punctures if you don't have a mileometer on your bike.

FWIW my Conti Gatorskins will easily last over 10k but they are obviously tougher tyres and I don't ride them hard.

 

[Welsh wheels]

Thats a crack, and it needs binning.

Thanks, good to know

 

[jefmcg]

Kenda

Tend to be the crap tyres new bikes come with.

Just for the record, I am getting between 6-9000km with my ~£10 Vittoria Rubinos.

 

[KnackeredBike]

[QUOTE 4939216, member: 9609"]as long as you renew the air in them every 465 miles they should be fine. (remember to renew the air on a dry day, no point in having heavy damp air in your tyres)[/QUOTE]
I wouldn't say a dry day because it will shorten the life of your inner tubes. Ideally you want very cold damp so as not to rust the valves, I do it about 6am on a frosty morning but of course if you can't make the effort to do it properly within a few paces of an open freezer door is probably sufficient as well.

 

[pclay]

Schwalbe Durano are generally good for about 5000 miles. You cannot tell if a tyre needs replacing based on mileage, as this will depend on the tyre.

In general, a tyre will need replacing if:

1, you start to get frequent punctures and/or
2, the tyre is visibly worn (the threads are showing through) and/or
3, the tyre is damaged and/or
4, the wear indicators have gone.

 

[pclay]

Tend to be the crap tyres new bikes come with.

Just for the record, I am getting between 6-9000km with my ~£10 Vittoria Rubinos.

i just googled the Kenda Kriteriums, they are not cheap. over £20 per tire.

 

[smutchin]

Tend to be the crap tyres new bikes come with.

The OP's Kenda Kriteriums are actually decent tyres - as they ought to be, retailing at around £30 each.

Like most tyre manufacturers, Kenda do a wide range, from cheap and nasty to really quite good.

 

[Welsh wheels]

i just googled the Kenda Kriteriums, they are not cheap. over £20 per tire.

They are good tyres, the only reason I'm thinking I need new ones is the crack in them that I put up a picture of.