1970 Dodge Challenger - Tyre Pressure

[PC80]

Hi all

Could anyone tell me the best tyre pressure for my 1970 Challenger R/T? Original 383 engine and 727 Torquefilte auto box.

It's on the stock 15" Rallye wheels (2944390) and has Firestone Firehawk tyres (SS20 235/60/R15 98S).

This is just for regular cruising, not for the strip etc.

Cheers!

[LewG]

I can't tell you the answer PC but any photos? My favourite muscle car, particularly when left alone as they should look!

[roscobbc]

25/26 PSI - probably 28-32 for sharper handling (if that isn't a contradiction in terms when using old school tyres)

[stuartmmcfc]

I put about 28 psi in my Cougar which is similar size. Any higher, the already light power steering gets even lighter

[PC80]

Thanks for the info folks. I do have pics but don't have a photo sharing account (like photobucket) so I can't upload just now. It's pretty stock. Plum Crazy with white vinyl interior. Low miles per gallon but high smiles per mile!

[Ubendum]

Correct tyre pressures for that are 32psi front and rear, not as others have stated.

Edit: Incidentally, those tyre you are using will upset the handling (term used loosely!) a little.

Edited by Ubendum on Wednesday 28th June 15:47

[PC80]

Ubendum said:

Correct tyre pressures for that are 32psi front and rear, not as others have stated.

Edit: Incidentally, those tyre you are using will upset the handling (term used loosely!) a little.

Edited by Ubendum on Wednesday 28th June 15:47

Thanks for that info. Yes, handling is a relative term for these cars. But if I can improve it, I would do.

Most of the muscle cars I see tend to have BFGoodrich Radial T/A tyres. Do you think this would be a better tyre? Cheers.

[Ubendum]

Original tyres on that would probably have been Goodyear Polyglas, which are still available, and a similar tyre to the BF Goodrich that most seem to use. The usual upgrade back in the day was to a steel belted radial. To get the best, they really need suspension upgrades. My own personal choice for the 15 x 7's rims that you are using would be Avon Turbospeeds.

As regards handling improvements, there are a lot that can be made, depending on what you think is wrong.

[Total loss]

Ubendum said:

As regards handling improvements, there are a lot that can be made, depending on what you think is wrong.

A proper front end alignment would be a start (not just the tracking), most American cars I've seen are way out, as they have only ever had the tracking done. Also get it done by somebody who knows what they are doing AND cares about getting it right, e.g. not your local kwick-fit etc. It can transform the driving feel.

[Derweasel]

Is that pressure the same for P225 70R14 98S? 1970 Challenger with original 318.