Road Attack pressures?

[nallac]

well my new tyres have finally turned up ex the states.
shit only took 3months..
I'm taking them in to the shop tomorrow to get fitted and want to know
what pressure people have/are run(ing) in them?
I've read somewhere about running them higher than other tyres.

I'm thinking around,
36/38 front?
40/42 rear?
whatya reckon.
oh there on a CB900.

[Trudes]

I run mine on about 36-34 and 40. I have Ohlins rear shock though, so not sure if that makes any difference.

[nallac]

Thanks Trudes


come on peoples
trudes can't be the only one running them?
can she?

there not that bad are they???.

[Cajun]

conti site say http://www.conti-fitmentguide.com/
2.5 front (36 psi)
2.9 rear (42 psi)

[yod]

i replaced my road attack rear with another yesterday

the bike is recommended to run 42psi front and rear

haven't checked what the shop inflated it to yet but will check this arvo (i once had a new set of PR2s put on with 24psi front and rear! :oi-grr:)

[Trudes]

I notice that everytime I get mine back from the shop that the tyres are fairly under inflated, not sure if that's done on purpose, but I run mine slightly under the recommended pressures because I think it feels too hard when they're on the recommended. I've had a bit of a play about with the pressures, deflate them to around 30-34 and 36-38 and find that it feels like they need more air so have found a happy 'medium' with 34-36 and 40 which feels right to me. Maybe have a play and see what feels right to you? I no expert so not entirely sure what difference a few psi makes... I'm sure someone will tell me shortly. :)

[yod]

I notice that everytime I get mine back from the shop that the tyres are fairly under inflated, not sure if that's done on purpose, but I run mine slightly under the recommended pressures because I think it feels too hard when they're on the recommended. I've had a bit of a play about with the pressures, deflate them to around 30-34 and 36-38 and find that it feels like they need more air so have found a happy 'medium' with 34-36 and 40 which feels right to me. Maybe have a play and see what feels right to you? I no expert so not entirely sure what difference a few psi makes... I'm sure someone will tell me shortly. :)

I'm similar; when I discovered those low pressures on my last bike (RF900) I put them up to 34/38 (I think recommended was 40/42) but found those pressures a bit too hard for my liking and backed them off a bit.

Theoretically softer tyres will grip a bit better (bigger footprint) but wear faster I believe.

[Jerry74]

I run 30 psi front, 32 rear is that too low???

[Grub]

I run 30 psi front, 32 rear is that too low???

That does sound low, but you need to check what the bike/tyre manufacturers say. Bike tyres are way different to car pressures. Bike pressures are higher to stop the tyre deforming when leaned over.

My CBR recommended is 36/42 so that's what I run. I can feel immediately if they're down 2psi as the bike just doesn't want to turn in or track the same.

[nallac]

Thanks for the link cajun, didn't know they had such a large/good fitment guide.lucky you converted them bars to psi cause i have no idea what psi=bar

I always check tyre pressure when i get new tyres fitted bike or car
can never trust em mechanics/tyre fitters even tho i've got a couple as mates.

I'll start at 36f 42r and play with pressures from there.

[Owl]

Doesn't lower pressure = more heat and higher pressure = less heat in the tyres? I know from experience that 0 pressure will melt a tyre very quickly.:whistle:

[AllanB]

Honda recommend something like 42 in the rear - I have found this way too high for any comfort and run 38.

The Honda dealer and my local tyre man agree - 36 front 38 rear, if two up add to the rear 40-42. The Hornet is a relatively light bike.

Start with 36 front -38 rear.

[mouldy]

conti site say http://www.conti-fitmentguide.com/
2.5 front (36 psi)
2.9 rear (42 psi)

And I agree with them but bear in mind that pressures are only ballpark cos it changes with regards to rider weight etc

[mouldy]

I run 30 psi front, 32 rear is that too low???

Nope , thats about right for a 250 running x plies .

[Jerry74]

Cheers mate thats what Trevor the Guru Pierce said and he is not wrong very often

[dipshit]

I put them up to 34/38 (I think recommended was 40/42) but found those pressures a bit too hard for my liking and backed them off a bit.

Most recommended rear pressures of 40 or 42 cover 2-up riding. It is a safer recommended pressure in case someone ends up running with a passenger... the bike isn't going to feel as squirmy.

1-up, around 36 front and rear would be more adequate.

If any recommended pressure chart doesn't distinguish between 1-up or 2-up, then take it it means 2-up.

[trumpy]

I have Sport Attacks on the Trumpy and when I got it back from Robert Taylor (after "Ohlinising" my bike) the tyre pressures were set at 33/36. I questioned Robert on the pressures but he said they found those pressures to be best for road riding (I suspect especially for a slow old fart like me) but did suggest I try some other pressures to be sure.
I tried 34/38 (Triumph recommendation)and 36/40 and 36/42 as I have run before.Took the bike out for four decent rides and have gone back Robert's 33/36 as they are spot on for my suspension set up and riding style.
Mmmmmm.......is crash and burn a riding style?..:blink:

[TLDV8]

I wonder if the fronts are still made in Korea ? (Rears in Germany)
You still might need to play with the pressure as the fronts can get some very odd wear pattens..fwiw.


<img src=http://i30.photobucket.com/albums/c345/manurewa/Conti.jpg>

[nallac]

well, scrubbed em in quite nicely on the way to the ColdKiwi
was running them @36/42.
Felt quite abit different to the bald ones i had before.
Alot firmer in the sidewalls didn't really help that i played
with suspension settings before leaving..

Was the first day back to work today since last tuesday(joys of shift work)
and noticed bike was different, feeling loose. Stopped at the gassy an
check pressures 31f 36r. Took em back to 36/40.
Much better on the blast home.

[klyong82]

Conti's have always performed better at 36/42.....great tyres and last long too.

[stormy1]

I'm similar; when I discovered those low pressures on my last bike (RF900) I put them up to 34/38 (I think recommended was 40/42) but found those pressures a bit too hard for my liking and backed them off a bit.

Theoretically softer tyres will grip a bit better (bigger footprint) but wear faster I believe.

I went to the Training day at Manfield with Brian Bernard on Saturday. We discussed tyre pressure but mainly in relation to track work. Interestingly enough he recommended standard pressure or maybe even a bit higher. Apparently if you lower the pressure the tyres deform when working hard and close the grooves. No doubt would have a major impact on a wet track.

Cheers
Dale

[Mishy]

Apparently if you lower the pressure the tyres deform when working hard and close the grooves. No doubt would have a major impact on a wet track.

That could apply to racing wets (I'm not sure on that one) but has no impact on a "dry" tyre. The tread pattern on a normal road or dry race tyre only has abouut a 5% influence on wet weather behaviour, although this increases a little with bigger tyres. 95% of grip in the damp comes from having a tyre that's compound is still warm and flexible enough to hold onto the track.
Sound freaky ? spun me out when I first had it explained to me :)

[pritch]

I had two new tyres fitted last week. Diablo Rosso - don't ask me why I couldn't really explain that... The guy who did the job was stated by the shop to be really good.

So when I got home I checked the tyre pressures: 39 front 37 rear. :wacko:

Yesterday I bought a socket to fit the wheel nuts and today I spent some time searching the web for the appropriate torque settings.:sherlock:
Suddenly this seems quite important.