Question 1

What does 20×12.00−10 mean?

Accepted Answer

20×12.00−10 breaks down as 20″ tall, 12″ wide, on a 10-inch wheel. It's also written 20x12-10.

Question 2

What machines take 20×12.00−10 tires?

Accepted Answer

Wide rear on garden tractors with extended decks — OEM Grassmaster-pattern fitments.

Question 3

Are all 20×12.00−10 tires interchangeable?

Accepted Answer

The size is — any 20×12.00−10 tire fits any 20×12.00−10 rim. But ply rating, tread pattern, and tube compatibility vary. 4P is the standard at this size for typical use.

Question 4

Can I use a 20×12.00−10 tire with a tube?

Accepted Answer

Most 20×12.00−10 tires are tubeless and run fine without one. You can run a matching 20x12.00-10 tube (TR-13 valve) inside a tubeless tire if you're patching a sidewall or running low pressure — it's safe and common practice.

Question 5

How fast does an order ship?

Accepted Answer

If it's in stock and your order is placed by 2 PM ET, it usually goes out the same business day — and within one business day either way. Standard ground delivery to the Eastern half of the country is typically 2–3 business days; West Coast 4–5 days.

20x12.00-10 Mower Tires

The 20x12.00-10 tire

OTR GrassMaster

What's at this size.

What's at this size

Common questions