'Running in' new tyres

[wokkadriver]

How long would you advocate taking things easy on a new set of rubber, chaps?

[barry sheene]

100 miles is usually standard, but make sure the whole width is scrubbed in.

>> Edited by barry sheene on Sunday 17th April 20:04

[itchy]

Don't be afraid to lean, just don't be hard on the brakes going in to turns and don't be hard on the gas when exiting turns.

Watch the chicken strips disappear, then gas it.

[wokkadriver]

Thanks, chaps, much appreciated!

[wolf1]

About two laps.

[bennyboysvuk]

wolf1 said:

About two laps.

Yep, although I'm amazed at how fast you can go on lap one on hot brand new tyres.

On the road, I generally pull away from the tyre fitting place and gas it in first gear to get the crap off the middle of the rear tyre at least. It adds a little warmth to it and it's fun too.

[itchy]

bennyboysvuk said:

I generally pull away from the tyre fitting place and gas it in first gear

I hope not if your engine is cold

[beanbag]

Quick burn out usually does the trick on the rear!

[stooz]

BTW, its not mileage, its heat. you need to burn off the excess oils used in the production.

road riding wont get them hot enough, so it takes longer than a few track laps. the mileage is a guide line ; depends how hot you get them.

[pesty]

stooz said:

BTW, its not mileage, its heat. you need to burn off the excess oils used in the production. road riding wont get them hot enough, so it takes longer than a few track laps. the mileage is a guide line ; depends how hot you get them.

stupid question time. after having a "moment" on brand new tyres I thought to myself why dont they wipe the tyres over with an alcohol wipe or something to remove the waxes and oils.

or would that not do anything?

[itchy]

stooz said:

BTW, its not mileage, its heat. you need to burn off the excess oils used in the production.

IIRC, tyre moulds are lined with a substance to facilitate a tyre's removal after pressing. A residue of this substance remains on the tyre's surface and it is this that needs to be got rid of. Heat per se will not do it but straightforward friction between tyre and road ("scrubbing") will.

Your statement implies that one can simply heat a tyre (in an oven, for example) in order to rid the tyre of unwanted substances.

>> Edited by itchy on Monday 18th April 14:12

[bennyboysvuk]

itchy said:

bennyboysvuk said: I generally pull away from the tyre fitting place and gas it in first gear I hope not if your engine is cold

Quite right. I always wait until the engine is at nearly normal operating temperature before riding.

[stooz]

itchy said:

stooz said: BTW, its not mileage, its heat. you need to burn off the excess oils used in the production. IIRC, tyre moulds are lined with a substance to facilitate a tyre's removal after pressing. A residue of this substance remains on the tyre's surface and it is this that needs to be got rid of. Heat per se will not do it but straightforward friction between tyre and road ("scrubbing") will. Your statement implies that one can simply heat a tyre (in an oven, for example) in order to rid the tyre of unwanted substances. >> Edited by itchy on Monday 18th April 14:12

Correct, its regarding the moulding. the friction though, creates heat..

But an oven will heat the entire tyre, and not necassarily just the outer part, and it won't fit in my oven anyway. the spinning forces, also ensure it gets flicked/scrubbed off rather than just drain to the lowest point

pesty; rubbing it off could be possible, but I think it penetrates the rubber at high temps, so getting the tyre sticky is what allows it to become chemically unbonded again and exit.

If it were just scrubbing, you would also need to 100 miles at full knee down crank to scrub the edges, or you would risk skidding! which means no one would dare scrub the edges of the tyres!

[rumpelstiltskin]

Stick it on rear paddock stand,fire up bike,stick it in first,run sandpaper over all tyre as wheel is spinning :-)

[hugoagogo]

i've just got a new front today, that doesn't help

i've been doing 'warm up lap' style weaving about at every opportunity

[big dazza]

I don't worry too much about the back, only the front.


However, why is it that its always p1$$ing down with rain when I get new tyres?