What does the size LT305/55R20 mean?

Reading left to right: 305 is the section width in millimetres, 55 is the sidewall height as a percentage of that width, and the tire mounts on a 20-inch wheel. All three must match what your vehicle specifies.

How much weight can this tire carry?

Load index 125/122 means one tire is rated to carry up to 3,638 lbs at its recommended inflation pressure. Check the placard inside your driver’s door and never fit a lower index than it lists.

What does the Q speed rating mean?

It certifies the tire for sustained speeds up to 99 mph under standard test conditions. Do not fit a rating below your vehicle’s original specification. Always drive within posted limits.

What is load range F?

Load range is the tire’s strength class, carried over from the old ply-rating system. This tire is F (12 ply), which determines how much weight it carries at a given inflation pressure.

Does this tire have run-flat capability?

No. This is a standard tire, so a spare or repair kit is needed if you lose pressure.

Will LT305/55R20 fit my vehicle?

It fits any vehicle that specifies LT305/55R20, provided the load index and speed rating meet or exceed the original fitment. Check the placard inside your driver’s door, or contact us before ordering if you are unsure.

Authentic Tire

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SizeLT305/55R20

Rim20"

Load RangeF (12 ply)

Gripmax Maxgrip R/T 80PSI LT305/55R20

Name: Gripmax Maxgrip R/T 80PSI LT305/55R20
Brand: Gripmax
SKU: NAT-GRIPMAX-810149130854
Price: 213.82 USD
Availability: InStock

Maxgrip · R/T

Price per tire

$213.82$242.99Save 12%

In stock

LT305/55R20 GRIPMAX MAXGRIP R/T 125/122Q 12PLY BSW 80PSI 55K+ ROAD HAZARD

Gripmax LT305/55R20 Pickup Truck & Off-Road

Free shippingOn every order

Brand newFactory-fresh

Your choiceDoor or installer

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Specifications

The full spec sheet

ModelThe manufacturer's name for this tread pattern. The same model in another size shares the same tread design and rubber compound.: MAXGRIP R/T 80PSI
Speed RatingA letter code for the highest sustained speed the tire is built to handle — T is 118 mph, H is 130, V is 149. Don't fit a rating lower than the one your vehicle came with.: Q (Up to 99 mph)
Load IndexA code for the maximum weight one tire can carry at its recommended inflation pressure. Match or beat the index listed on your driver's-door sticker.: 125/122
Load RangeThe tire's strength class, carried over from the old ply-rating system. C, D and E carry progressively more weight at higher inflation pressures — you'll mostly see them on trucks and vans.: F (12 ply)
SeasonThe conditions the tread and rubber compound are designed for. All-season is the year-round default; winter tires stay flexible below 45°F; summer tires grip best in warm, dry weather and aren't made for snow.: —
WeightWhat a single tire weighs. It doesn't change your price — delivery is quoted at checkout, not charged by weight.: 65 lbs
SidewallHow the lettering on the tire's outer wall is finished — blackwall, white letters, and so on. It's cosmetic and doesn't affect how the tire drives.: BSW
Run FlatA reinforced sidewall that lets you keep driving a limited distance at reduced speed after losing air. Only fit these to a vehicle with tire-pressure monitoring.: No
Tire type: Light Truck
Terrain: Rugged-Terrain
Load index (single/dual): 125/122
Ply rating: 12-ply
Tread warranty: 55,000 miles
WidthSection width in millimetres — the tire's width from sidewall to sidewall. It's the first number in a size like 225/65R17.: 305 mm
Aspect RatioThe sidewall height as a percentage of the section width — the second number in 225/65R17. A lower number means a shorter sidewall.: 55
Rim DiameterThe wheel diameter this tire mounts on, in inches. This one has to match your wheel exactly.: 20"
UPC / GTIN: 810149130854
Part number: 810149130854

Performance

Why this tire

Hybrid tread sits between all-terrain and mud-terrain — trail grip with quieter highway running

Load range F construction (12-ply rated) for higher load capacity at pressure

Load index 125/122 — rated to carry up to 3,638 lbs per tire

Speed rating Q, certified for sustained speeds up to 99 mph

Light-truck (LT) casing for pickups, vans and heavier-duty use

305 mm section width, 55 series sidewall, mounts on a 20" wheel

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