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Black radial tire with deep tread blocks and white size markings on the sidewall

Westlake

Westlake SL309 275/65R18 123/120Q 10-ply tire

SKU CH-MDCK-H5QDC

All-season highway tire for light trucks, vans and SUVs with a 10-ply load range E rating and Q speed index up to 99 mph

  • Seasonal useAll-Season
  • Intended vehicleLight Truck, Van & SUV
  • Tire load index123/120
  • Tire speed ratingQ
  • Package height10
  • Package length31
  • All-season traction for light trucks, vans and SUVs
  • Variable pitch tread blocks reduce road noise for a quieter ride
  • 10-ply Load Range E construction handles heavy-duty loads
  • Steel belt design resists damage and improves cornering
  • Wide grooves expel water and slush to prevent hydroplaning

Westlake SL309 275/65R18 light-truck tire

The Westlake SL309 is an all-season highway radial built for light trucks, pickups, SUVs and vans. Its 10-ply Load Range E construction supports heavy-duty loads up to the 123/120 load index. A Q speed rating allows sustained speeds up to 99 mph. The tire suits commercial light-truck duty as well as daily family use.

Check rim diameter and load needs before ordering

Confirm your wheels are 18 inches in diameter to match the 275/65R18 sizing. Verify the vehicle placard calls for Load Range E or a 10-ply rating so the 123/120 load index is appropriate. Ensure the 32.1 inch overall diameter clears suspension and bodywork without rubbing. The tire is not run-flat and requires a standard tube-type or tubeless rim.

Steel-belt radial with reinforced sidewalls

Twin high-tensile steel belts and a double polyester cord body resist punctures and aid off-road durability. Reinforced sidewalls add damage resistance on rough surfaces. Variable pitch tread blocks reduce road noise for a quieter cabin. Wide grooves and multi-sipe shoulders evacuate water and slush to limit hydroplaning. Rim is not included.

How it compares

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

Price $133.99
Pricier than about 79% of the 621 comparable items (median $87.99).

Specifications

Product
Brand nameWestlake
Display
Screen ratio65
Size & build
Package height10
Package length31
Package width31
Overall tire diameter32.1
Rim diameter18
Sidewall styleBSW: Black Side Wall
Size275/65R18
Tire size code275/65R18 123/120Q E 10 Ply
Tire width275
Wheel diameter18 in (45.7 cm)
Tread depth14/32
Compatibility
Intended vehicleLight Truck, Van & SUV
Compatible vehiclesMedium / Heavy Truck
More details
Seasonal useAll-Season
Tire load index123/120
Tire speed ratingQ
Tire load rangeE (10 Ply)
Tire ply ratingE (10 Ply)
Run-flat capabilityNo
Tire categoryHighway

Questions about this item

Does the purchase include the wheel or just the 275/65R18 tire?

Only the tire is supplied; the rim shown in images is for display and is not included.

Which load range and ply rating does this 275/65R18 size carry?

It is rated Load Range E with a 10-ply construction, giving a load index of 123/120.

What does the Q speed rating mean for everyday driving on this tire?

The Q rating allows sustained speeds up to 99 mph, which covers normal highway use for light trucks and SUVs.

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