Tyre pressure/handling question? - SV650.org

22-10-10, 04:10 PM

Hi,

Would 4psi down on front and rear tyres make the bike handling ****e? Because the ZX felt as though it was running on a flat, stopped checked front tyre no puncture no nails only 4 psi down, so pumped it up and still the same although if I go faster the feeling seems to go, the brakes are sqeaking but it's not hard to push at all, could the brakes be binding making it pull slightly to one side, giving the feeling of a flat tyre?

yorkie_chris · 23-10-10, 10:58 AM

You can probably notice 4psi

the brakes binding cannot make it pull to one side, neither does a flat tyre

fizzwheel · 23-10-10, 11:26 AM

4 psi is probably enough that you'd notice it.. Not sure why your bike is handlnig strangely, but check the basics so

1. tyre pressures
2. type profile ( i.e. not gone square )
3. Suspension settings - have you tweaked or fiddle with them and induced the handling characteristic that way.

23-10-10, 09:11 PM

wheel alignment ?
twisted forks ?

only things i have experience that make the bike go to one side

yorkie_chris · 23-10-10, 09:14 PM

Mirrors ok?

23-10-10, 09:21 PM

check the head/wheel bearings

24-10-10, 05:58 AM

Wheel bearings seem ok, suspension not touched, tyres not squared, head seems to have a little movement, how do I check forks are not bent?

johnnyrod · 25-10-10, 01:52 PM

4psi down on the front would feel pretty horrible, are you sure the extra air is still in it?

25-10-10, 02:11 PM

Quote:

Originally Posted by johnnyrod

4psi down on the front would feel pretty horrible, are you sure the extra air is still in it?

Yep pumped up riden left for the day re-checked with digital pressure guage and still on 36 psi, I have how-ever noticed my wheel is pointing slightly left, so forks maybe twisted slightly.

johnnyrod · 26-10-10, 09:29 AM

try this
www.bikeguru.co.uk/forks.html

22-10-10, 04:10 PM	#1
SUPERSTARDJ01 Guest Posts: n/a	Tyre pressure/handling question? Hi, Would 4psi down on front and rear tyres make the bike handling ****e? Because the ZX felt as though it was running on a flat, stopped checked front tyre no puncture no nails only 4 psi down, so pumped it up and still the same although if I go faster the feeling seems to go, the brakes are sqeaking but it's not hard to push at all, could the brakes be binding making it pull slightly to one side, giving the feeling of a flat tyre?

23-10-10, 10:58 AM	#2
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Quick handling question? You can probably notice 4psi the brakes binding cannot make it pull to one side, neither does a flat tyre __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

23-10-10, 11:26 AM	#3
fizzwheel Super Moderator Mega Poster Join Date: Dec 2003 Location: Somerset Posts: 3,614	Re: Quick handling question? 4 psi is probably enough that you'd notice it.. Not sure why your bike is handlnig strangely, but check the basics so 1. tyre pressures 2. type profile ( i.e. not gone square ) 3. Suspension settings - have you tweaked or fiddle with them and induced the handling characteristic that way. __________________ Look Dave, I can see you're really upset about this. I honestly think you ought to sit down calmly, take a stress pill, and think things over. K5 GSXR 750 Anniversary Edition

23-10-10, 09:11 PM	#4
barwel1992 Guest Posts: n/a	Re: Tyre pressure/handling question? wheel alignment ? twisted forks ? only things i have experience that make the bike go to one side

23-10-10, 09:14 PM	#5
yorkie_chris Noisy Git Mega Poster Join Date: Apr 2007 Location: Halifax/Leeds Posts: 26,645	Re: Tyre pressure/handling question? Mirrors ok? __________________ Currently Ex Biker Now rebuilding a 63' fishing trawler as a dive boat

23-10-10, 09:21 PM	#6
busasean Guest Posts: n/a	Re: Tyre pressure/handling question? check the head/wheel bearings

24-10-10, 05:58 AM	#7
SUPERSTARDJ01 Guest Posts: n/a	Re: Tyre pressure/handling question? Wheel bearings seem ok, suspension not touched, tyres not squared, head seems to have a little movement, how do I check forks are not bent?

25-10-10, 01:52 PM	#8
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Tyre pressure/handling question? 4psi down on the front would feel pretty horrible, are you sure the extra air is still in it?

26-10-10, 09:29 AM	#10
johnnyrod Member Mega Poster Join Date: Jul 2003 Location: Doncaster, oop norf Posts: 2,128	Re: Tyre pressure/handling question? try this www.bikeguru.co.uk/forks.html

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