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EFV-8 Club Forum / General Ford Discussion / 48 Mercury with radial tires

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Discussion Topic: 48 Mercury with radial tires

blarge

11-29-2022 @ 9:16 AM

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I plan to put Diamond Back 670R15 radials on my stock 48 Mercury. Can I use my original rims without any inner tube? Will the rims leak air? The original 48 Mercury rims do not have the safety ridge in the tire bead seating edge like a modern tubeless car. Will the lack of this safety ridge cause me any trouble in a blowout? Can radial inner tubes be used with the original rims? Thanks Bill Large

JayChicago

11-29-2022 @ 10:20 AM

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I think you are thinking this thru correctly. I have read that many have put these modern tubeless radials on their old wheels with no problem. But the old wheel rims need to be good and clean. I didn't trust my wheels, and after discussing it with someone at DiamondBack, ordered radial tubes with the new radial tires. Extra cost for tubes was peanuts compared to the high cost of the tires.

If I went tubeless, was envisioning coming to the storage garage to find a flat tire due to a slow leak at an imperfection in a wheel rim. And since the old wheel doesn't have that safety ridge you talked about, maybe the flat tire bead would have rolled off the wheel. Then can't just air it up, would require pulling the wheel & tire, and a trip to a tire shop. PITA!

The radial tubes are heavier gauge material, designed to stand up to the flexing of a radial tire. Been on my 1940 for five years now, no flats, no problems.

However, not sure how a tube in a tubeless tire would perform in a highway blow-out situation. Hope I never have to find out.

This message was edited by JayChicago on 11-29-22 @ 10:36 AM

carcrazy

11-29-2022 @ 10:35 AM

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If the tires you plan to use are designed as tubeless tires, I would run them that way. If one of your wheels leaks air, you can remove it to have any leaking rivets sealed.

trjford8

11-30-2022 @ 6:22 AM

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You could seal the rivets with something like POR-15 or a small dab of silicone on each rivet.Just make sure the rims are nice and clean where the tire meets the edge of the rim. If the edges are pitted from rust I would not use them unless you run a tube.

This message was edited by trjford8 on 11-30-22 @ 6:22 AM

wmsteed

11-30-2022 @ 8:38 AM

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The so called 'safety bead' on wheels first appeared on Chrysler in 1941, GM started to use this feature on the large cars, Buick's and Cad's in '51/52 which was long before radial tires were a dim glimmer on the horizon.
I started to use tubeless radial tires on the majority of my vehicles in the mid 1970's. in reality I put tubeless bias ply tires on my '53 Olds 88 in 1955..
My insurance man was going to cancel my insurance, he maintained that the tubeless tires were unsafe and would roll off of the rim on turns.
I went to the Uniroyal dealer where I had bought the tires and was told the insurance man did not know what he was talking about.
Regardless of what tire you use, the wheel should be checked for trueness, be free of excessive pitting in the bead area.
I owned a business for many years, we had trucks from 1/2 ton to 80k, in the late '70's we switched all of our vehicles from tube type tires to steel belted radials, that ended an on going tire problem we dealt with for many years.

Bill
36 5 win delx cpe

Jerry_Woods

01-21-2023 @ 7:42 AM

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It is not recommended to use radial tires on a vehicle with original rims that were designed for bias-ply tires, as the radial tires may not fit properly and can cause leakage. Additionally, the original rims on your 48 Mercury may not have the necessary safety features to properly secure and seal radial tires without the use of an inner tube.
It's best to consult with a professional tire specialist or mechanic to see if your original rims can be modified or if new rims are required to safely use radial tires on your vehicle. https://performanceprobe.com/

This message was edited by Jerry_Woods on 1-25-23 @ 1:04 PM

mfirth

01-21-2023 @ 2:12 PM

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I ran radials on my 1952 & 1953 Fords with no leaks. Radials tend to cause some full wheel covers & trim rings to try to "walk" around the wheel putting presure on the valve stem. Other than that, there were no issues.

Drbrown

02-03-2023 @ 8:11 AM

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I've owned my '47 Ford for 10 years. It came with 15" Classic Coker radias. Don't know history of the rims. I've not put many miles on it and drive it occasionally on the interstate. I've never had to put any air in the tires. Just lucky.

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