How long should road tyres last ?

[Dave7]

First..............I fully realise it is "how long is a piece of string" type question with so many "if this/if that" etc. but here goes........................
Tyres are bog standard Giant PSL1 700 x 23mm on a defy carbon.
Road use is normal as in a mixture of tarmac and tarmac/gravel.
I have them pumped to 85/90 psi.
I did 1100 miles last year and am planning to double that this year.
So...............
Forgetting p******s as I will never get one
Has anyone got ANY ideas at all how long/how many miles I should expect from them before replacing (as I have absolutely no idea).

 

[DCLane]

It depends ...

On the commuter bike (running Schwalbe Lugano / Rubino's) I get 1000 miles off a rear and 1500 on a front, both at 110-120psi, due to the state of the roads in/out of Leeds.

The best bikes get Conti GP4000s when I get 2500 on a front and 1500 on a rear, running at 120psi.

Oh, and pump your tyres up

 

[Citius]

replace the rear when it squares off - then put the front on the rear and buy a new tyre for the front.

 

[helston90]

I had very similar tyres to the OP on my defy 1 and got through the rear in about 1200 miles, I am a heavy but quick rider though so they get abused a bit.
Rubino's on a commute I'm looking at 1500-2000.

 

[Racing roadkill]

I'm usually fairly easy going on tyres, intend to pick my routes, and lines, carefully. I've binned a few tyres for being thread bare over the years, but rarely for premature damage. I've got up to 7000 miles from a set of Schwalbe M+, and slightly less from tyres with stickier compounds.

 

[Apollonius]

Mine tend to tell me they have done enough by becoming increasingly puncture-prone. They get replaced then.

 

[martint235]

I look to replace every 3000 miles or so using Durano Plus.

I don;t think I ever had stock tyres on a bike for very long as I usually don't like the feel and so replace them with Duranos.

 

[Dave7]

replace the rear when it squares off - then put the front on the rear and buy a new tyre for the front.

Showing my ignorance...............what does "squaring off" mean ?

 

[si_c]

I've been using plain rubinos on my bike this year, been really good for general purpose riding, just replaced the front tyre after ~1800miles, and the rear tyre was replaced at around 1400miles. The front I replaced after I got a puncture, and inspecting the tread noticed some quite deep gashes, it was probably fine, but better safe than sorry. I'm running 23c at 120psi on the rear, 110 front, so similar to @helston90 and @DCLane

 

[Citius]

Showing my ignorance...............what does "squaring off" mean ?

When there is an identifiable flat around the centre section of the tyre.