rash12
|
| posted on 4/5/16 at 12:55 PM |
|
|
tyre pressures
what tyre pressures are people running on thier 7 type cars please?
|
|
|
|
|
mackei23b
|
| posted on 4/5/16 at 01:18 PM |
|
|
OK, I'll start - I've run at 18psi for the Caterham and Westfield running on iether 185x60x13 or 205x60x13, I know some that run as low as
16psi though these are race cars - all cold pressures
[Edited on 4/5/16 by mackei23b]
|
|
|
CosKev3
|
| posted on 4/5/16 at 01:22 PM |
|
|
I'm running 18psi too in 195/55 15 NS2-R'S.
Seems to be spot on for road and did some twenty minute sessions at Oulton Park and they were good on there too 
|
|
|
ian locostzx9rc2
|
| posted on 4/5/16 at 02:08 PM |
|
|
My striker is 16psi
|
|
|
David Jenkins
|
| posted on 4/5/16 at 03:28 PM |
|
|
I generally run 18psi front and back, although I have also had 20psi front and 18psi back (60% of the weight is at the front). I think I prefer 18psi
all round.
This is on a 600kg car.
|
|
|
daniel mason
|
| posted on 4/5/16 at 04:27 PM |
|
|
I run 14 - 15 psi in my Jedi.
|
|
|
Bluemoon
|
| posted on 4/5/16 at 05:20 PM |
|
|
Real answered is to adjust to get the correct contact patch... but 18psi is not a bad starting point.
|
|
|
sprintB+
|
| posted on 4/5/16 at 07:40 PM |
|
|
I have been up and down the pressure range, but after taking advice from fellow Duttoneers settled at 18 psi. some are at 15psi but I did bottle it a
bit at such low pressure on old RS alloys. Afraid they may roll the tyre.
|
|
|
David Jenkins
|
| posted on 4/5/16 at 08:02 PM |
|
|
quote:
Originally posted by Bluemoon
Real answered is to adjust to get the correct contact patch... but 18psi is not a bad starting point.
I used a remote IR thermometer to measure the temps across my tyres after an enthusiastic drive - 18psi gave reasonably even results.
|
|
|
rusty nuts
|
| posted on 4/5/16 at 08:15 PM |
|
|
Procomp recommended 25psi when I had my car set up.
|
|
|
David Jenkins
|
| posted on 5/5/16 at 06:54 AM |
|
|
I found that mine was too skittish when I went up to 20-something all round - but that might be a sign that the rest of my suspension needs attention!
|
|
|
Chris_Xtreme
|
| posted on 5/5/16 at 09:52 AM |
|
|
I run at 14psi
Toyo Proxes R1R 195/50 R15
slightly larger 7 style car.
|
|
|
johnemms
|
| posted on 5/5/16 at 10:47 AM |
|
|
I get nice even Tyre wear at 16/17 psi cold - but have to work them to get some warmth in them and sticky asap 185/70/13 Yokohama A021 - 
I tried 20's but far too hard and wore heavy in the middle ..
[Edited on 5/5/16 by johnemms]
Own chassis & Build - First time pass!!
"7's" aren't really "cars", they are 'experiences"
|
|
|
David Jenkins
|
| posted on 5/5/16 at 01:20 PM |
|
|
johnemms - you have similar tyres to mine - I wonder if the higher profile makes it easier to use lower pressures?
|
|
|
rash12
|
| posted on 6/5/16 at 08:19 PM |
|
|
thanks for all the replies i will try at 18psi
|
|
|
.jpg){kind=avatar}
.jpg)
