Tyre Pressures CBR 600 Avon Azaro II's

[jimdaworm]

Just wondering what my tyre pressures should be, according to the tyres they have max load blah blah at 42 psi, both front and rear, does that mean I should have them both at 42psi??

According to the sticker on my bike which covers bridgestone and a couple of other brands but not Avon's it says I should have the rear at a lower pressure than the front 35 or somthing from memory.

:scooter:

Also what do you think of these tyres and how much will it cost me to replace them?

[loosebruce]

Azaro cover quite a range of tyres what number do they have ie: AV40, newer ones are AV59, AV60, AV46ST etc

I've run a AV40SP once funny old tyre, no wet grip what so ever, would light up the back with a slip of the clutch in 5th WTF, dry had good grip on the power but would slide off the power, go figure, the latest Vipers are very very good tyres.

People cant really tell you what pressure to run, it's a real personal thing to how you like your bike to feel, a higher pressure will give the bike a more sharper, quicker turning feeling, more on rails, but the higher the pressure the less the rubber can move around and generate heat fast, which creates grip, so heat is good you see. But a higher pressure would generally see more mileage from the tyre.
The lower the pressure the bike will feel like it moves around more squidgy (WTF) know what mean) it wont feel as stable but once the tyre gets heat into (which is easier) in theroy the more grip you can generate.
But bear in mind the more heat you generate the more pressure inside the tyre you create, hence why a racer will run a lot lower PSI on the track to cope with the abuse the tyre is getting and the higher temps it will run at and get it at optimal grip, but also track tyres are designed to run at a higher temp than road tyres as well, hence why after a few laps on road tyres they over heat still.
Road tyres are roughly designed to run around the 60-70 degree mark where as track tyres are 80 degree plus, slicks can run 100+ degree (i think). Alot of people are fooled into thinking running Racetec/Supercorsa's on the road becasue they are shit hot on the track they must be shit hot on the road, they are shit hot on the road if you can push hard enough to keep a high enough temp in them otherwise you are better off to stay with road tyres which have less warm up time as well, more rubber can move around the quicker the heat builds up.
In saying all this shit tyres are so much more advanced these days and have come a long long way in the last 5 or so years, i tried a new set of Viper Sports (road compond) run at my normal pressure for the road of 32 rear handed it back to Avon after 1600km, they said that carcuss design of these tyres means i can run them at their pressure of 38psi and the carcuss still allows good movement to generate heat and get the same level of grip i wanted and the tyre will last longer, so they gave me a supersport (fast road/track use) fully expecting me to get more milage than i got with the harder compond because of the pressure being ran right, so i handed it back to them 900kms later :spudwhat:

What i'm trying to get across though is to understand what a tyre does and how it is affected by the pressure you run, best bet is to start at higher say 38-40psi this well give you good confidence as the bike will feel more stable, once or if you find you're needing more grip start lowering your psi (just a little though you'd be amazed at the differnce 3-4psi can make) and go from there, it is a good idea to drop pressure at the track but if it's a first time out stick with what you know and go from there.

Also nearly all readings on tyre walls for pressure are for cold temp, some have max hot temp, but when setting always set for cold temp, if you set for the hot temp and then ride you could find too much pressure in your tyre, something very bad could then happen, so always set your pressure 'before' you ride. Or once the tyre has lost heat again.

The cost of a set of tyres varies so much it aint funny, you really have to figure out the best tyre for your riding abilty and go from there, it is trail and error some you like some you dont, just the way it is, what works for someone else might not work for you, sure ask what people think of a tyre and listen to their opinions.

[loosebruce]

Chances are i'm full of shit and dont have a clue what i'm on about (still half asleep) but i think i'm mostly right(ish) sure someone will correct me if i'm not

[jimdaworm]

Thanks for that book bruce! I sure hope you can touch type!

I found the exact model av36b

Thats all very interesting. I guess I am not an insane rider but I do like to lean over a bit and pretend that I am a race bike rider on a nice cambered bit of road, especially up rarther than down hills for some reason.

Anyway I will be looking for some good tyres that will keep me on the road for a beginner to average rider.

I am running both tyres at about 40psi at the moment so I spose thats good to get my confidence up :2guns:

Maby the question should be more like are there any tyres I should stear clear of?



Thanks again for all your info

[loosebruce]

Maby the question should be more like are there any tyres I should stear clear of?




Yeah AV36B lol, most tyres are pretty damn good these days, a good next set to think of would be:

Michelin Pilot Sport or Road
Avon AV46ST Rear and AV49SP front, seem a popular combo.
Dunlop 220's (maybe a 218 which is slightly stciker up front)

Some others will put in there 2 cents worth, but i've used Michlein all my biker life for the road apart from recently when i tried the Vipers and they never did me wrong, apart from when i did wrong.

[pritch]

Alot of people are fooled into thinking running Racetec/Supercorsa's on the road becasue they are shit hot on the track they must be shit hot on the road, they are shit hot on the road if you can push hard enough to keep a high enough temp in them otherwise you are better off to stay with road tyres,

Absolutely. The post was worth green rep for that passage alone.

The more honest you are with yourself as to exactly how you are going to use the tyres, the better service you will get from them.

Preferences seem to change with nationality. Dunlop are big in the States, most poms (and me) wouldn't want them for a wart on the arse. Pirelli Diablo, and to a lesser extent Bridgestone BT014 are rated top tyres for a sports bike on the UK sites I watch. I would take a power of persuading otherwise.

Tyre pressures seem to have changed; once a manufacturer recommended a range of pressures according to the intended speed and/or load. Now they give just the one set (36f 42r in my case). Now most people regard these figures as a maximum but for road use they are probably right.

You should be able to find recommended pressures on some of the manufacturers web sites although they may be getting shy in view of possible litigation...

[loosebruce]

Absolutely. The post was worth green rep for that passage alone.

The more honest you are with yourself as to exactly how you are going to use the tyres, the better service you will get from them.


Yeah exactly i dont want to be a cunt but if people are getting 5000km+ out of racetecs on the road you're taking the piss

[Will]

Hi jimdaworm

I ride a cbr 600 too, so thought I'd let you know what I run on.

Pilots, and my pressures are 40 rear and 36 front. Those are on the light side because I am smaller. (Had to lower my bike too, so I could reach the ground)

Love the Pilots. Can't fault them. And I don't have a chicken strip.

Hope that helps.

[Racey Rider]

Good effort LB. The only thing I would question is this:

But bear in mind the more heat you generate the more pressure inside the tyre you create, hence why a racer will run a lot lower PSI on the track to cope with the abuse the tyre is getting and the higher temps it will run at and get it at optimal grip, but also track tyres are designed to run at a higher temp than road tyres as well, hence why after a few laps on road tyres they over heat still.

To my way of thinking, If you thought your Road tyre was going to get 'abused' and run too hot at the track, you would but more air IN it.

Are 'track tyres' designed to run at higher tempuratures? Or are we just talking designed to handle more 'aduse'/harder riding to stay at the right temperature?

and you should have EDITED post 3 into post 2!
but then I guess you've got WT to catch up with. Like normal...:yeah:

[jimdaworm]

So if i am heavier I should pump my tyres up to higher pressures? I weigh about 85kg

According to the specs for the other tyres it says lower back and higher front I guess the most important pressure to get right is the front one as it gives all the control

[aff-man]

Yeah exactly i dont want to be a cunt but if people are getting 5000km+ out of racetecs on the road you're taking the piss

huh i have got almost 4000km so far with no end in sight asw of yet???

But then again i am a nana

[loosebruce]

huh i have got almost 4000km so far with no end in sight asw of yet???

But then again i am a nana

And you'd find better grip through something road based like pilot powers or diablos!!!
Really the people i know that are fast and can justify running a racetec on the road are looking at 3000kms tops if they are nana's, and anything from 800 - 1500km if they're riding normal.

[loosebruce]

Good effort LB. The only thing I would question is this:

yea sorry that was the point i started confusing myself :eyepoke:

[aff-man]

And you'd find better grip through something road based like pilot powers or diablos!!!
Really the people i know that are fast and can justify running a racetec on the road are looking at 3000kms tops if they are nana's, and anything from 800 - 1500km if they're riding normal.

Ahhhh probably. But unfortunaltey most exracies are reachtechs or super corsa's or similar. And It's way cheaper to buy a set of them.... I find that i get more grip out of the racetechs than i did out of the M1's though...

[pritch]

So if i am heavier I should pump my tyres up to higher pressures? I weigh about 85kg According to the specs for the other tyres it says lower back and higher front I guess the most important pressure to get right is the front one as it gives all the control

These days, as I said, they just give one set of pressures to do all weights, all speeds.

I haven't made a study of it but I've never heard of a bike having higher pressure in the front. The weight is usually biased slightly toward the rear and that tyre is doing most of the work.

If the tyre manufacturers websites don't help ring your nearest dealer and get the gospel according to the manual.

[loosebruce]

Ahhhh probably. But unfortunaltey most exracies are reachtechs or super corsa's or similar. And It's way cheaper to buy a set of them.... I find that i get more grip out of the racetechs than i did out of the M1's though...

Fair enough on the price sde of things, but the rest is in your head!