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Get technical:
The Astro TR-21 delivers excellent traction for medium horsepower tractors, allowing you to hook up power to the ground efficiently.
Features & Benefits
- Deep tread with excellent self cleaning of mud and debris for long lasting traction and performance
- 12 ply rated
- 30 psi max inflation
- 45/32" tread depth
- Comfortable ride on or off pavement
Designed for use on tractors, sprayers, harvesters, trailers, implement control, and other farm equipment. These tires are typically designed to reduce soil compaction, resist damage, and provide high flotation so that drivers don't sink in soft surfaces.
This product is not covered by a manufacturer’s treadlife warranty.
The maximum carrying capacity for a tire determined by the manufacturer.
Maximum speed capability to safely carry a load for an extended period of time.
The maximum load carrying strength at the specified inflation pressure, also known as ply rating.
The side of the tire between the tread and rim, with cosmetic branding as well as information about the tire including manufacturer, model, size, etc.
Measured in 32nds of an inch, this metric shows how much tread life is left on a tire, with the tire's traction & stopping capabilities greatly diminished at 4/32nds and less. Tire manufacturers include "tire wear bars" at 2/32nds to indicate when your tire is worn out.
The highest inflation pressure (measured in pounds of force per square inch, PSI) the tire is designed to contain, and should only be used when called for by the vehicle placard.
An identifier of a particular tire line and size combination assigned by the tire manufacturer.
Shipping weight (lbs)
The measurement of width from a tires inner sidewall to the outer sidewall.
The range of widths the rim of the vehicle can be for this tire to be safely mounted on.
The diameter of a tire that is inflated without any load applied.
- 16.90-30 137A6
$441.99
Label Value Width 16.9 Ratio - Inflation Pressure 30 Tread Depth 45.00 Width Range NA Sidewall Tube-Type Tread Width NA Sidewall Tube-Type - 16.90-30 143A6
$504.99
Label Value Width 16.9 Ratio - Inflation Pressure 36 Tread Depth 45.00 Width Range NA Sidewall Tube-Type Tread Width NA Sidewall Tube-Type - 18.40-30 139A6
$545.99
Label Value Width 18.4 Ratio - Inflation Pressure 20 Tread Depth 48.00 Width Range NA Sidewall Tube-Type Tread Width NA Sidewall Tube-Type
Best Rated Tires
TR-21 ∙ 3 sizes available