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Got a 1950 Dodge Coronet, 4-door, fluid drive trans, 230 ci engine. Currently I'm riding on Remington G78-15 4-ply polyester tubeless tires on original 15 x 5 wheels. I've been looking at putting radials on my original 15 x 5 wheels. I had just about decided on 225/75R15--but then I looked at this chart and it seems to say 195 is the highest diameter I should go with. I've done so much research that I can't recall now where I got this--but another chart suggested that 215 was acceptable (and then I stepped it up to 225, based on yet another chart that said it was a larger-than-normal tire, but still acceptable). So--I really want to keep my original wheels and I want the largest acceptable tire I can get (without getting any rubbing in the wheel wells, overly screwing up my odometer, etc.). Not interested in doing any modifications to the car--it's a 90+ percent survivor. Thoughts on the best size radial tire for me? Thanks.

Want to put radial tires on my 39 Plymouth business coupe. Engine, trans and rear are stock, however will be adding an overdrive. Currently has 600x16 bias ply tires and for safety would like to switch to wider modern size radials. Thinking of using 16 in wheels, either 5.5 or 6 in width. Seems that the selection of tires are better with a 6in wheels. Was considering either P215/65R16 or P225/60R16. Considering purchasing a wheel and have a used tire installed to verify fit. Would 15 inch wheels have any benefit, however may be difficult finding a 15in. that has enough clearance as the car is getting disk brakes on front. Appreciate your thoughts on size of wheels and tires. Richard

Folks....so I took my '49 B1B out for a test drive a few days before Thanksgiving 2017. Took it around the block (about 3/4 miles) making 4 right hand turns. Made three loops. It was all I could do to keep the truck going straight and returning to straight after making the turns. I would say I have close to 90 degrees free play at the steering wheel. Think I can get rid of most of the free play by adjusting the steering box. What concerns me most is the failure of the truck to come back to center after the turn. Been awhile since I drove this truck or any vehicle with manual steering. I do remember and understand that after making the turn you could let the wheel slip through your hands and the steering would return to center or close back to straight. With this truck I had to "steer" the wheel back to straight after the turn and with the excessive free play it was kind of exciting getting it back to straight and keeping it there. Also, I had 15" radial tires on the front and noticed the steering seemed exceptionally hard to turn. I mean back when this truck was my daily driver I used to be able to parallel park it using one hand pressed against the steering wheel. Checked the toe-in and although not to 1/8" spec, it's pretty close at about 3/16 . Any suggestions about the non-centering and hard steering would be appreciated. If anybody could give me an estimate of acceptable free play from your vehicles that would be great also. Note that my primary purpose of this truck would be driving it in parades and local car shows. I don't see myself ever taking it on a highway or above maybe 45-50 mph. Best regards to all.