Re: Mixing tyre brands? Again.
 

I had a feeling these may be the answers I got. Ha. Well i'.ve decided to go for the road attack 2 on the back, as they're as close to the same tyre as I'll get and I can in no way ride to the limit of my tyres any way.

The fact the 1's are no longer made also helped make up my mind.

So all going well, I can experience a proper shaped tyre and I will live to tell the tale.

Re: Mixing tyre brands? Again.
 

Just remeber to check your tire pressure, that's the most important thing on tires next to there actually beinging tires on your bike. Ask the tiredude at the track what pressure you should be running if you are unsure.
And did you know for every 20 kilos above 75kg you should add 0.05 Bar(0.72psi) in your front and 0.1 Bar(1.45 psi) on your rear when road riding? Atleast that's Michelins rule of thumb, and I'm guessing it's the same for any other brand. Now do your trackday and grind away them pesky footpegs.

Re: Mixing tyre brands? Again.
 

So my example of mixing 2 pirellis, one rock 'ard and one made of chewing gum you'd be fine with?

Re: Mixing tyre brands? Again.
 

So as an ex-racer could you explain why it's fine to use two random tyres from the same manufacturer that may vary significantly in grip, profile etc. but using a pair of tyres from different manufacturers that may be very well matched is verboten?

Re: Mixing tyre brands? Again.
 

if an explanation is needed here I would leave 2 wheels alone and walk everywhere

Re: Mixing tyre brands? Again.
 

With one running shoe and one hobnailed boot (but both from clarkes)?
:-P

Re: Mixing tyre brands? Again.
 

I've been running pirrellis since owning the bike but last year my rear one needed changing so I got an avon, I havent had any problems, infact the bike handles better

Re: Mixing tyre brands? Again.
 

Usual story, it's not recommended, but plenty of people (including myself) have been fine mixing tyres, as long as you ride accordingly.

Re: Mixing tyre brands? Again.
 

Perhaps someone can offer an actual example of mismatched tyres causing the earth to stop spinning, no-one is saying its good practice but this is the real world and people do end up with a crossover sometimes, so the more experienced among us can provide some evidence against this heresy?

Re: Mixing tyre brands? Again.
 

Hard evidence of someone flying off into a field and dying due to it? No.
Simple facts of grip levels and variance? Yes.

Having different tyre models on the front and rear (regardless of whether it's simply a different manufacturer, or a different type of tyre), will give different grip levels.
The variance in grip levels will vary between different tyres depending on the differing mixture of compounds used.
To go for an extreme example (that I've used personally) - I had a sports tyre on the front, and a touring tyre (Avon Storm) on the rear. Front tyre had a softer compound, with a higher operating temperature for its optimum grip levels. The rear had a harder compound, with a lower operative temperature for its optimum grip. This meant that at the start of a journey when my tyres were cold, the rear would be giving me plenty of grip, yet the front would be really poor - as my journey went on, the front would warm up and get into it's operating window, giving loads of grip, however if I tried to really make use of the grip, the rear would then start to slide as it didn't have a sticky enough compound to keep up.

Long and short of it is that those kind of riding conditions are manageable, but 'could' cause an accident if you weren't expecting it.