The Ford Barn

rotorwrench · 01-23-2017, 01:33 PM

On a tube type application, the rubber stem is somewhat reinforced in rubber around the metal parts that it's vulcanized to. It is generally heavier than the small slug that is removed from the wheel to allow for it. We are only talking grams here when referring to differences so it's not by much. Tire carcasses and treads are a lot more uniform on modern tires but the reproductions are made in pretty much the same way they were back then with some exceptions. The plys generally always have an overlap somewhere so there can be a fair amount of gram weight difference at the overlap points depending on the carcass design. Some tires are marked for runnout too to but I don't think any of the reproductions are and the old rims aren't marked for that either.

The dot is for reference alignment to the stem location on all the tires I've worked with including aircraft tires. The dots are usually yellow but now days, it's up to the manufacturer.

01-23-2017, 01:33 PM	#21
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,411	Re: Coker tire question On a tube type application, the rubber stem is somewhat reinforced in rubber around the metal parts that it's vulcanized to. It is generally heavier than the small slug that is removed from the wheel to allow for it. We are only talking grams here when referring to differences so it's not by much. Tire carcasses and treads are a lot more uniform on modern tires but the reproductions are made in pretty much the same way they were back then with some exceptions. The plys generally always have an overlap somewhere so there can be a fair amount of gram weight difference at the overlap points depending on the carcass design. Some tires are marked for runnout too to but I don't think any of the reproductions are and the old rims aren't marked for that either. The dot is for reference alignment to the stem location on all the tires I've worked with including aircraft tires. The dots are usually yellow but now days, it's up to the manufacturer.