All Coker WW Radials at 35 P.S.I.?

I have seen some discussion of Coker recommending running their WW Radials at 35 PSI no matter what car they are on. While at Fall Carlisle I asked why at the Coker booth. I was told that the WW rubber is not as flexible as the black rubber so they like people to run 32-35 lbs to prevent cracking.

If I were running their tires on the front of a Corvair with 1000 lbs or so on the entire front end I would be all over the road with 32 lbs!

Let the discussion begin!

 

I had a blow out a couple of years ago in my model a coupe , left front at about 70 MPH,scared the **** outta me, Coker was great about it and told me it was probablly because of low tire pressure . All their WW radials come now with a sticker on them to run 35 psi.

 

no I run both fronts and rears in the 20's,and there on a 32 roadster,35 pounds is too much.

 

We do recommend 35 psi on most of our radials tires (for the 16” Coker radials we reccommend 41 psi). If you run a tire under inflated it will create more friction within the tire and result in more heat build up. Heat build up a is one of the top causes of tire failures (remember the Firestone/Explorer problems). Also, running the tire at too low an air pressure could cause the whitewall to crack.

Jess

Jess Hoodenpyle
Customer Service Manager
Coker Tire Co.
1-800-251-6336

 

The Corvair is a different animal as you know when it comes to tire pressure on the front. If the tire manufacturer is telling you that their tires need to be at 35, when the Corvair is between 12-18, I would just bite the bullet and realize that the WW tires are just not going to work safely on your car. The Corvair safety problems were overblown, IF the tires in the front were at their proper tire pressure.

 

howismydriving- I was using my Corvair as an extreme example. I'm well aware of the negative press concerning the supposedly weird handleing of Corvairs. I guess GM could not count on owners reading the tire pressure recommendations inside the glovebox lid.

Jess-If tires heated up at the car manufacturers recommended pressures wouldn't we see constant tire failures? I keep the tire pressure on my wife's Altima at the factory pressure of 30 lbs. We have not overheated and blown any tires in 145,000 miles.

Are you saying Coker radial tires overheat at less than 35 psi?

 

You haven’t had a problem on your Altima because you are running the correct psi. If you were to run 15 psi instead of 30 psi that's be a problem.

The problem I'm talking about is under inflation. Any tire that is run under inflated will build up heat and could fail.

We always try to be proactive, so that is one reason we recommend (and even put a sticker on the tire) the correct psi for the design parameter of the tire.

Jess