Speciality companies produce them using original molds combined with modern, improved rubber compounds. Their incredibly stiff sidewalls eliminate the harsh "tread slap" of radials, providing the plush, floating, and historically accurate couch-like comfort that classic luxury cars were engineered to deliver.

Who Makes Them?
Authentic bias-ply tires are primarily produced by specialty vintage brands licensed through distributors like Coker Tire and Classic Tire Canada:

• Avon: The historic original equipment supplier for post-war Rolls-Royce and Bentley models.
  
• Firestone Vintage / Deluxe Champion: Recreated using original molds for pre-war and mid-century luxury classics.
  
• BFGoodrich Silvertown: Known for iconic, integrated wide whitewalls.
  
• Ensign & Lucas: Popular UK/European brands specializing in vintage balloon-style tires.
  
  

Available Sizes for Vintage Luxury Cars
Because they are meant for exact restorations, bias-ply tires are sized using historic measurement systems rather than modern P-metric codes. They are organized by era and wheel diameter:

Pre-War Balloon & High-Pressure Sizes (17" to 21" Wheels)
Designed for vintage touring cars like the Rolls-Royce 20/25 or Phantom I & II:

• 6.00-19 / 6.50-19 (Common for 1930s elegant British classics)
  
• 7.00-18
  
• 4.75-21 to 5.25-21
  
  

Post-War Numeric Sizes (15" and 16" Wheels)
Standard on late 1940s to 1950s luxury vehicles like the Rolls-Royce Silver Dawn and early Silver Cloud:

• 6.50-16 (Original factory equipment for the Silver Dawn)
  
• 6.70-15 (Extremely common for 1950s luxury cruisers)
  
• 7.10-15
  
• 8.20-15 (The massive "big car" tire used for late 1950s flagship luxury sedans)
  
  

Late Classic Alphanumeric Sizes (14" and 15" Wheels)
Introduced in the late 1960s, featuring load ratings denoted by letters:

• G78-15
  
• H78-15 (Used on heavy, boulevard-cruising American and European luxury models)
  
• L78-15 (The highest load capacity for maximum-weight formal limousines)
  
  

Many companies now build "bias-look radials". They look exactly like a 1950s pie-crust bias-ply tire on the outside but feature a modern steel-belted interior.