M350ZB Posted July 8, 2009 Share Posted July 8, 2009 What pressure are you guys with 20"'s running front and rear ? Been told 32psi and also 35psi........ Thanks all Quote Link to comment Share on other sites More sharing options...
Stew Posted July 8, 2009 Share Posted July 8, 2009 35 psi works for me Mark. Quote Link to comment Share on other sites More sharing options...
Martin W Posted July 8, 2009 Share Posted July 8, 2009 What pressure are you guys with 20"'s running front and rear ? Been told 32psi and also 35psi........ Thanks all Surely Tyre manufacturers should determine correct pressure for size/profile Nissan specify pressure for the spec they fit as standard as 35 Quote Link to comment Share on other sites More sharing options...
GT4 Zed Posted July 8, 2009 Share Posted July 8, 2009 What pressure are you guys with 20"'s running front and rear ? Been told 32psi and also 35psi........ Thanks all Surely Tyre manufacturers should determine correct pressure for size/profile Nissan specify pressure for the spec they fit as standard as 35 +1 Quote Link to comment Share on other sites More sharing options...
Ekona Posted July 9, 2009 Share Posted July 9, 2009 Not always, tyre pressure is also heavily dependant on tyre construction as well: For example, you'd run higher pressures on a tyre with softer sidewalls. For the most part though, I'd try standard pressures first and change them from there on how you personally feel the car is handling. Quote Link to comment Share on other sites More sharing options...
M350ZB Posted July 9, 2009 Author Share Posted July 9, 2009 35 psi works for me Mark. What tyres you running Stew, and thanks will stick a tad more in, currently running 32psi Quote Link to comment Share on other sites More sharing options...
Chris`I Posted July 9, 2009 Share Posted July 9, 2009 35psi all round will be fine for most driving. Only time you will need to change them is on the track. You can experiment with it if you want though. Spot the difference between need and want Quote Link to comment Share on other sites More sharing options...
Stew Posted July 9, 2009 Share Posted July 9, 2009 35 psi works for me Mark. What tyres you running Stew, and thanks will stick a tad more in, currently running 32psi 245x30 R20 and 285x30 R20. edit - Toyo T1Rs Quote Link to comment Share on other sites More sharing options...
M350ZB Posted July 9, 2009 Author Share Posted July 9, 2009 35 psi works for me Mark. What tyres you running Stew, and thanks will stick a tad more in, currently running 32psi 245x30 R20 and 285x30 R20. Quote Link to comment Share on other sites More sharing options...
rtbiscuit Posted July 9, 2009 Share Posted July 9, 2009 stock pressure 35 psi Quote Link to comment Share on other sites More sharing options...
M350ZB Posted July 9, 2009 Author Share Posted July 9, 2009 stock pressure 35 psi , just put 35psi in all four Quote Link to comment Share on other sites More sharing options...
andlid Posted July 16, 2009 Share Posted July 16, 2009 some states 10% of max pressure is a good starting point. tried finding something on the net on this how to calc the correct pressure depending on tyre-wheel and weight of car. (normal driving) Since I do a bit of track on the bike I know how important it is with the pressure so normally I should run 36psi front and 34psi rear (according to the book) on track I run 28 front and 26 rear... Its a bit of strange one that there isnt a straight enough answer. I found looking around that 10% of maximum pressure seems to be a good starting point and then you can "feel" the way the cars handles etc when you have that and adjust accordingly. Quote Link to comment Share on other sites More sharing options...
Chris`I Posted July 16, 2009 Share Posted July 16, 2009 Its a bit of strange one that there isnt a straight enough answer. I found looking around that 10% of maximum pressure seems to be a good starting point and then you can "feel" the way the cars handles etc when you have that and adjust accordingly. Hmm, not sure I'd agree with that. My Falkens say 50PSI max, and when I was at an airfield day, I ran them at 45PSI. These felt far too over inflated and reduced grip massively - which was the intention of doing it on the day so you lose grip earlier and slides are more predictable. I would start at 35PSI and work a bit higher and lower. When you track your bike, I assume you take warm pressure readings too? In which case they are close to the OEM 36/34PSI due to the heat? Quote Link to comment Share on other sites More sharing options...
andlid Posted July 16, 2009 Share Posted July 16, 2009 Its a bit of strange one that there isnt a straight enough answer. I found looking around that 10% of maximum pressure seems to be a good starting point and then you can "feel" the way the cars handles etc when you have that and adjust accordingly. Hmm, not sure I'd agree with that. My Falkens say 50PSI max, and when I was at an airfield day, I ran them at 45PSI. These felt far too over inflated and reduced grip massively - which was the intention of doing it on the day so you lose grip earlier and slides are more predictable. I would start at 35PSI and work a bit higher and lower. When you track your bike, I assume you take warm pressure readings too? In which case they are close to the OEM 36/34PSI due to the heat? they would rise with about 3-4 PSI, to land somewhere around 31/32 front and 30ish rear. (it depends on how heavy I brake on the front side), its terrible how much 'feel' goes into this though. The lads that really know use lots of strange formulas and feel to get it right... the problem I have is that I'm having a hard time finding the right pressure for me... Agreed that 45PSI sounds far to high... Quote Link to comment Share on other sites More sharing options...
Chris`I Posted July 16, 2009 Share Posted July 16, 2009 Agreed that 45PSI sounds far to high... Great fun for sliding about though Quote Link to comment Share on other sites More sharing options...
andlid Posted July 16, 2009 Share Posted July 16, 2009 Agreed that 45PSI sounds far to high... Great fun for sliding about though I slide enough with my tiny rear tyres! 235! Strange though that its all a bit of 'fell' and 'myth' regarding tyre pressure which is SO important!?! Quote Link to comment Share on other sites More sharing options...
M350ZB Posted July 16, 2009 Author Share Posted July 16, 2009 Strange though that its all a bit of 'fell' and 'myth' regarding tyre pressure which is SO important!?! Been running 35psi in mine, and does feel a tad better with regards to grip Quote Link to comment Share on other sites More sharing options...
campo Posted July 18, 2009 Share Posted July 18, 2009 Strange though that its all a bit of 'fell' and 'myth' regarding tyre pressure which is SO important!?! Been running 35psi in mine, and does feel a tad better with regards to grip I would agree, i run 35psi all round and can definately tell the difference if there is a drop of as little as 2 or 3 psi! Quote Link to comment Share on other sites More sharing options...
M350ZB Posted July 20, 2009 Author Share Posted July 20, 2009 Strange though that its all a bit of 'fell' and 'myth' regarding tyre pressure which is SO important!?! Been running 35psi in mine, and does feel a tad better with regards to grip I would agree, i run 35psi all round and can definately tell the difference if there is a drop of as little as 2 or 3 psi! , main difference i feel is at round-a-bouts Quote Link to comment Share on other sites More sharing options...
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