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Federal
Federal 595 RPM P255/30R21
Federal 595 RPM P255/30R21
This wheel on real customer builds
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Federal
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/week
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Width:
21.00
(in)
Height:
10.04
(in)
Depth:
21.00
(in)
SKU:
Federal89Enaafe
$216.00
Lease-to-own for as low as
/week
Get Started
Guaranteed to Fit — confirm your size with the fitment checker on this page
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Looking for a 255/30R21 tire? The Federal 595 RPM is available now at ThreePiece.us with free shipping on every order and Affirm financing at checkout.
What 255/30R21 means
In the size 255/30R21, 255 is the section width in millimeters (10.04 in), 30 is the aspect ratio — the sidewall stands 30% as tall as the tire is wide, or 76.5 mm (3.01 in) — R denotes radial construction, and 21 is the wheel diameter in inches. That works out to an overall diameter of about 27.02 inches, turning roughly 746 revolutions per mile. Overall diameter is what matters for speedometer accuracy and clearance when you change sizes, so compare it — not just the width — against your current tire.
The service description on this tire decodes to a load index of 93 — a maximum load of 1,433 lbs per tire. The speed symbol Y corresponds to a maximum sustained speed of 186 mph.
Specifications
| Size | P255/30R21 |
| Service Description | 93Y |
| Load Index | 93 |
| Speed Rating | Y |
| Section Width (mm) | P255 |
| Aspect Ratio | 30 |
| Temperature Grade | ATIRE RIM DIAMETER=21TIRE TYPE=UHPTRACTION=AATREAD WEAR=160TREAD DEPTH=UQTG=160 AA AWARRANTY= |
Frequently asked questions
Will 255/30R21 tires fit my vehicle?
Check the size molded into your current tire's sidewall or the tire placard inside the driver's door jamb — if it reads 255/30R21, this tire matches your vehicle's fitment. If you're changing sizes, compare overall diameter to keep your speedometer and clearances right.
How fast does this tire ship?
Every order at ThreePiece.us ships free, with fast delivery from a nationwide warehouse network. Affirm financing is available at checkout.
What does 93Y mean on the Federal 595 RPM?
93Y breaks down as load index 93 — rated for 1,433 lbs per tire — with a Y speed rating, good for a maximum sustained 186 mph.
Keep shopping
Browse Federal tires, see every Federal 595 RPM size, or view all tires at ThreePiece.us.
- BRAND:
- Federal
- MODEL:
- 595 RPM
- SIZE:
- P255/30R21
- ASPECT RATIO:
- 30
- LOAD INDEX:
- 93
- SECTION WIDTH:
- P255
- SERVICE DESCRIPTION:
- 93Y
- SPEED INDEX:
- Y
- TEMPERATURE:
- ATIRE RIM DIAMETER=21TIRE TYPE=UHPTRACTION=AATREAD WEAR=160TREAD DEPTH=UQTG=160 AA AWARRANTY=
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