PDA

View Full Version : Interesting difference


Dicky Ticker
18-04-13, 08:12 AM
I have just had new Michelin Pilot Roads fitted and the recommended pressures from the tyre fitter and the Michelin site is 32front 36rear.

The owners manual states 36front and 42rear

Tyre build changes over time with development and I am almost positive that the new tyres look smaller than the old ones despite being same size and profile. My bike is 12 years old now so my owners manual is for tyres that were fitted 12 years ago

Just bringing this to your notice so that you can check you are running the correct pressures when you have new tyres fitted.

Geodude
18-04-13, 08:38 AM
Interesting. DT where's the info on the michelin site about recommended pressures? as i can only find info on there that says 'use bike manufacturers recommended pressures?

NTECUK
18-04-13, 09:25 AM
Tyre pressures are not set in stone .
I have lower than book on mine cos I like it that way.
2 psi at a time and go with the feel you get on with .

johnnyrod
18-04-13, 09:36 AM
This again! Higher pressure means less grip and more stability, and of course vice versa. 33/36 is fine for more or less everything, but ithnk the higher pressures they recommend these days are to protect against the pothole epdiemic, and you don't really need all the grip that you could get from slightly lower pressures. On track you can go down to 31/30 and though you ride for s horter time you stress the tyre a lot more. So no, tyre pressures aren't set in stone. Any monute someone will come along and tell me I'm about to die in a horrible soft-tyre incident...

Dicky Ticker
18-04-13, 11:34 AM
I can't find the Michelin site ,perhaps it is soley for the dealers as that is where I saw it when he looked it up.and yes I am aware that the psi's stated are not set in stone and can be a personal preference.
Tyre compounds have changed in 12 years as banding has making the way the tyre perform different possibly why the manufacturer has change the recommended pressure.
N.B 12 years ago the manufacturers pressure recommendation was the same as the owners manual.
Please note the use of the word "recommended" and the post is only a general heads up for people have new tyres fitted in the case of variations.

Geodude
18-04-13, 05:26 PM
Ta for the info DT always worth having a bit of extra knowledge :)

stuR
18-04-13, 06:28 PM
You make a good point. My 1999 gsxr book says 36 front and rear, which goes against pretty much everyones psi choice. On my cb500 i prefer 36 + 40

Bluefish
18-04-13, 10:29 PM
DT, on my sprint 08 plate, it say's the same 36,42, so that's what i put in, mind it all depends on weight on the bike and how hard the tyres are going to be used, mine usually has more weight than usage stress, I'm not gonna put 30 in and then put 30 stone on the bike, and expect it to go round a corner, you pays your money and take your chances.

Dicky Ticker
19-04-13, 06:11 AM
Bluefish,I whole hearted agree with the two up being 36-42,I think I would be doing that as well if I was constantly carrying a pillion as you do.
99.9% of my riding is solo + occasional luggage so I am going to give the "Recommended" pressures a go on this set of Michelins and see how they wear/handle in comparison. Time will tell but the handling seems OK on the lower pressure solo and it is no problem to bring the pressures up a couple of psi if after a bit of time I am not happy with the way the tyres are performing