Here's what you need to consider:
* Size: 4.50-21 is the most common, but you should double-check your owner's manual or the tire size stamped on your existing rim (if you have them). Variations might exist, especially if you have different size wheels fitted in the past.
* Bias-ply vs. Radial: Stick with bias-ply tires. Radials are not suitable for classic cars like the Model A due to their different handling characteristics and potential damage to the suspension.
* Load Capacity: Ensure the tires have a load capacity suitable for your Model A. You'll want to find tires with the appropriate load rating for safe operation.
* Brand: Several reputable companies specialize in tires for classic cars. Some popular choices include Coker Tire, Firestone (they offer some period-correct options), and others that cater to vintage vehicles. Research reviews and choose a tire known for its quality and durability.
* Availability: Due to the age and relative scarcity of this size, it’s always best to check with multiple tire suppliers well in advance of needing them.
In summary: Start by identifying the correct size, ideally from your car's documentation or existing wheels, and then search for bias-ply tires in that size from suppliers specializing in classic car tires. Don't be afraid to call tire suppliers and discuss your needs to ensure you get the correct fit.
