Howdy Lyle,
I am assuming you are taking the car out on a track!?
If so then I drive a '66 Lotus Cortina Mk1 and may be
able to give you some ideas. Although I have never
run Yokohamas, I have run several different tire
combinations with the same suspension setup and
determined that every tire, every track, and every
weather condition requires different tire pressures,
what a surprise. Radial tires need more pressure.
All pressures referenced are when the tires are cool,
before a track session. I have run Toyo RA1s with as
much as 34 lbs front and 31 lbs rear and BFGoodrich
R1s, on the same day, that worked well at 31 lbs front
and 29 rear, sound familiar Myles. If your car is
setup relatively stock I would be surprised if you
would every want as much air in the rear, I usually
set the front with 2 to 4 lbs more in the front.
Expect to see the pressures increase 4 to 6 lbs after
being a track session.
Don't know of any publications, I've always just ask
the others going faster than me what they do!
Hope this helps! Let me know if you need any
clarifications!
Royce Miller
Orangevale, CA
'66 Lotus Cortina #111
--- Lyle Rundhaug <lrichard@ticon.net> wrote:
> I'm preparing to take the Cortina GT out for the
> first time this weekend,
> and I'm at a sort of roadblock. I have no idea where
> to begin with tire
> pressures and what temps to look for?
> On our FF we use anywhere from 12 to 16 lbs. for
> starters ... but I fear
> this would be far too low for the Cortina. I've been
> reading a little on
> tires ... but mostly on construction and how they
> behave on the pavement ...
> that sort of stuff. Can't seem to find a clue as to
> where to begin the
> constant search for the best tire response.
> We're using Yoko 008rs - 205-60-13. Looks like temps
> will be in the 80's for
> the event. Anybody got a suggestion as to where we
> could start?
> Also , does anyone have a suggestion as to a good
> publication on tires that
> won't make your eyes slam shut for hours at a time?
> Thanks
> Lyle R. Rundhaug
> 68 Cortina GT
>
__________________________________________________
Get Yahoo! Mail – Free email you can access from anywhere!
http://mail.yahoo.com/
|