Old Tire Size Guide: Radial, Poly/Fiber, Bias-Ply, Cheater and Drag Slicks

Cheater Slicks
Tire Size Guide: Radials, Poly/Fibers, Bias-Ply's, Cheater and Dragster Slicks
 

Figuring out your classic tire size and its conversion is a hassle — decipher the size information and make the selection of the replacement tires much easier.

Below is a comprehensive list of Radials, Poly/Fibers, Bias-Ply’s, Cheater Slicks and Dragster Slicks with each original tire size listed, and each of the related measurements is charted.

How to Measure Tire Size

Classic and Race Tire Size Conversion Chart

Editor’s Note: Due to the amount of information presented, the table below scrolls horizontally.

Tire TypeTire SizeTread WidthSection WidthOverall DiameterConstructionMax LoadMin Rim WidthMax Rim WidthTube / Tubeless
Radial165R154.606.5025.20Poly/Steel1120 lbs4.506.00Tubeless
Radial185R154.757.2827.00Poly/Steel1355 lbs5.006.50Tubeless
Radial185/65R155.507.4424.45Poly/Steel1168 lbs5.006.50Tubeless
Radial205/65R156.108.2325.47Poly/Steel1400 lbs5.507.50Tubeless
Radial205/75R155.808.0027.10Poly/Steel1400 lbs5.007.00Tubeless
Radial215/65R156.408.7026.02Poly/Steel1510 lbs5.507.50Tubeless
Radial215/70R156.408.7026.90Poly/Steel1620 lbs5.507.50Tubeless
Radial225/70R156.709.0027.40Poly/Steel1753 lbs6.008.00Tubeless
Radial235/70R157.009.5028.00Poly/Steel1896 lbs6.008.50Tubeless
Radial235/75R157.009.5028.00Poly/Steel1896 lbs7.008.00Tubeless
Radial255/70R157.6010.2029.10Poly/Steel2183 lbs6.509.00Tubeless
Polyester/FiberglassF60-158.809.2025.90Poly/Fiberglass1500 lbs7.008.00Tubeless
Polyester/FiberglassF70-156.508.3026.90Poly/Fiberglass1500 lbs5.508.00Tubeless
Polyester/FiberglassG70-156.708.5027.50Poly/Fiberglass1620 lbs5.508.00Tubeless
Polyester Bias-Ply5.00-154.105.6024.85Polyester675 lbs4.005.00Tubeless
Polyester Bias-Ply5.60-153.805.9625.79Polyester970 lbs4.005.50Tubeless
Polyester Bias-Ply6.70-154.507.0128.58Polyester1450 lbs5.006.00Tubeless
Polyester Bias-Ply7.10-154.507.7028.88Polyester1550 lbs5.507.00Tubeless
Polyester Bias-Ply8.20-155.008.3529.56Polyester1920 lbs6.007.00Tubeless
Polyester Bias-Ply14/31-1514.0017.0031.00Polyester1565 lbs13.0016.00Tubeless
Polyester Bias-Ply4.50/4.75-163.804.7526.20Polyester660@3Opsi2.755.00Tube
Polyester Bias-Ply5.00-164.105.9025.85Polyester760 lbs4.005.00Tubeless
Polyester Bias-Ply6.00-164.636.2628.56Polyester1400@32psi4.004.50Tube
Polyester Bias-Ply6.50-165.107.0029.10Polyester1580@32psi4.505.00Tube
Polyester Bias-Ply6.70-164.756.7728.62Polyester1130@3Opsi4.505.00Tube
Polyester Bias-Ply7.00-165.407.6030.40Polyester1900@36psi4.505.50Tube
Polyester Bias-Ply7.50-164.907.4031.00Polyester1660@4Opsi5.006.00Tube
Polyester Bias-Ply8.90-166.758.8930.94Polyester1400 lbs6.008.50Tubeless
Polyester Bias-Ply8.20-186.258.8033.00Polyester1415 lbs6.008.50Tubeless
Cheater Slicks7.75-147.008.5026.50Polyester1450 lbs5.508.00Tubeless
Cheater Slicks7.75-157.008.5026.50Polyester1500 lbs5.508.00Tubeless
Cheater Slicks8.20-158.5010.7030.50Polyester1920 lbs7.008.00Tubeless
Cheater Slicks10.00-159.5012.0030.20Polyester1960 lbs8.0010.00Tubeless
Cheater Slicks8.20-168.5010.7030.50Polyester1920 lbs7.008.00Tubeless
Cheater Slicks10.00-169.5012.0030.20Polyester1960 lbs8.0010.00Tubeless
Radir Dragster Slicks9.00-159.0012.5032.00Polyester1830 lbs7.0012.00Tubeless
Radir Dragster Slicks10.00-1510.0013.0029.25Polyester1900 lbs8.0012.00Tubeless
Radir Dragster Slicks12.00-1512.0015.0032.00Polyester1950 lbs10.0015.00Tubeless
Radir Dragster Slicks9.00-169.0012.5032.00Polyester1830 lbs7.0012.00Tubeless
Radir Dragster Slicks12.00-1612.0015.0032.00Polyester1950 lbs10.0015.00Tubeless
Excelsior Radial600R164.606.5028.00Poly/Steel1400@35Psi4.005.00Tubeless
Excelsior Radial650R164.906.9028.80Poly/Steel1580@35psi4.006.00
Excelsior Radial700R165.207.8029.10Poly/Steel1650@35psi4.006.00Tubeless
Excelsior Radial550R184.405.5028.50Poly/Steel1279@44psi4.005.00
Excelsior Radial700R184.405.5028.50Poly/Steel1279@44psi4.005.00Tubeless
Tire TypeTire SizeTread WidthSection WidthOverall DiameterConstructionMax LoadMin Rim WidthMax Rim WidthTube / Tubeless