What is the Current Trailer Tire Size to Replace 78-14 Tires

Updated 08/04/2015 | Published 08/03/2015

Question:

Have 178/14 tires need to now that radial replacement size Thanks

asked by: Ken

Expert Reply:

The 78-14 tire size is an old designation. Depending on the letter that is in front of the 78 it could be a 205/75-14 (F78 or G78) or a 215/75-14 (H78 or J78). The capacity of the existing tires would also help identify the size needed.

The difference between these two sizes is that the 215 is 0.4 inches wider and 0.4 inches taller than a 205. I have included links to all of the radial tires in both sizes for you.

expert reply by: Michael H