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Black sidewall tire with radial tread pattern, 18 inch rim size

Royal Black

Royal Black Racing Trac 235/55R18 104W XL tire

SKU CH-8631-346WC

All-season high-performance tire for SUVs and light trucks, 235/55R18 with 104W XL load and speed rating, 420 UTQG treadwear and 28.2 inch diameter

  • Seasonal useAll-Season
  • Intended vehicleLight Truck, Van & SUV
  • Tire load index104
  • Tire speed ratingW
  • UTQG traction gradeA
  • UTQG treadwear grade420
  • All-season traction for year-round driving confidence
  • Speed rating W supports up to 168 mph capability
  • XL load range handles heavy SUV and truck loads
  • UTQG 420AA indicates strong treadwear and wet grip
  • 2 inch overall diameter fits 18 inch rims precisely

235/55R18 104W XL High Performance All-Season Tire

The Royal Black Racing Trac is a high performance all-season tire built for SUVs and light trucks. It carries a 104 load index and a W speed rating approved for speeds up to 168 mph. The 235/55R18 size fits 18 inch rims and features a black sidewall.

Replaces worn original equipment on SUVs

Drivers gain the XL load range for heavier hauling and the W rating for sustained highway speed. The jump is worth it when the factory tires lack the 420 AA UTQG grades for traction and treadwear. It is not for buyers who need a dedicated winter compound or a run-flat design.

18 inch rim diameter and 28.2 inch overall diameter

The tire mounts on an 18 inch wheel and measures 28.2 inches tall when inflated. The 235 mm section width and 55 aspect ratio set the contact patch and sidewall height. Clearance must be verified against the vehicle specification before fitting.

How it compares

Measured against everything we stock in ATV, Car & SUV Tires, at today’s prices. Recalculated every night.

Price $74.99
Cheaper than about 63% of the 621 comparable items (median $87.99).

Specifications

Product
Brand nameRoyal Black
Display
Screen ratio55
Size & build
Package height9
Package length27
Package width27
Overall tire diameter28.2
Rim diameter18
Sidewall styleBSW: Black Side Wall
Size235/55R18
Tire size code235/55R18 104 W XL
Tire width235
Wheel diameter18 in (45.7 cm)
Tread depth7/32
Compatibility
Intended vehicleLight Truck, Van & SUV
Compatible vehiclesSUV
More details
Seasonal useAll-Season
Tire load index104
Tire speed ratingW
UTQG traction gradeA
UTQG treadwear grade420
Tire load rangeXL
Tire ply ratingXL
UTQG rating420AA
Run-flat capabilityNo
Tire categoryHigh Performance

Questions about this item

Will this 235/55R18 tire fit my 18-inch rim?

Yes, the tire is built for an 18-inch rim diameter. The 235 mm section width and 55 aspect ratio match the size designation, and the overall diameter measures 28.2 inches when mounted and inflated.

What is the correct way to mount this directional high-performance tire?

Mount the tire so the sidewall rotation arrow points forward when the vehicle moves ahead. The common error is installing one tire backward, which reduces wet traction and increases noise.

When should I replace these tires based on the original 7/32-inch tread depth?

Replace them when the tread wears down to 2/32 inch, the legal minimum in most regions. The UTQG treadwear rating of 420 indicates a moderate wear rate, so inspect depth regularly with a gauge.

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