Fitment Pilot
Garage Saved garage
Menu

BFGoodrich All-Terrain T/A KO3 LT275/65R20

Trail Boss on 20s -- KO2 familiarity or newer build?

KO3 is the newer, snow-rated 20-inch pick.

This is the newer BFGoodrich KO3 in LT275/65R20 (about 34.1 inch), a severe-snow-rated all-terrain aimed at Silverado Trail Boss builds, checked against two much shorter Continental TerrainContact sizes. The peers are highway 17-inch tires; this is a tall LT with winter certification. It leads when you run 20s on a Trail Boss and want a proven-style aggressive A/T that carries a 3-peak snow rating.

Nicole, Fitment Pilot editor

Reviewed by Nicole

Fitment

2019-2026 Chevrolet Silverado 1500 fourth-generation trucks when LT275/65R20 specs stay inside the route limits

Verify first

This tire size is useful only when the full wheel-and-tire setup is checked. The LT275/65R20 size has to stay inside the Silverado 1500 LT Trail Boss 4x4 Crew Cab route's 34.2 inch tire-diameter limit and must be paired with the right load, rim width, and wheel offset.

Choose it when
Choose it when LT275/65R20 fits your Trail Boss inside the checked +18 to +32 mm offset window and you want a severe-snow-rated aggressive all-terrain.
Pass when
Pass when the load range or service description is wrong, when wheel width is outside spec, or on aggressive-offset, lifted, or trimmed builds that need their own clearance route.
Our cross-product compare

Same category. Different reason to buy.

Evidence level B
Best for
Silverado Trail Boss owners on 20s who want a snow-rated aggressive A/T.
Bridgestone Dueler A/T Ascent 255/70R18 113T MPN 009704 is an exact SimpleTire row promoted into the truck tire catalog for 2024 Chevrolet Silverado 1500 LT Trail Boss 4x4 Crew Cab planning with official tire-family d...
Continental TerrainContact A/T 265/70R17 115S MPN 15506840000 is an exact SimpleTire row promoted into the truck tire catalog for 2024 Chevrolet Silverado 1500 LT Trail Boss 4x4 Crew Cab planning with official tire-fa...
What's included
LT275/65R20, about 34.1 inch, 7.5-9.5 inch rim range; severe-snow-rated, newer KO3 construction.
Tire size: 255/70R18 113T
Tire size: 265/70R17 115S
Product approach
Confirm exact size, load range, rim-width range, and service description before comparing seller prices.
The 2024 Chevrolet Silverado 1500 LT Trail Boss 4x4 Crew Cab route keeps offset, diameter, load, and rim-width checks visible before the offer is treated as a match.
Documented fitment only -- no standout approach beyond exact application is recorded for the TerrainContact A/T 265/70R17 115S MPN 15506840000.
Install burden
Mount, balance, and TPMS relearn; set LT pressures. Confirm full-lock clearance for a 34-inch tire.
Moderate install. Exact tire MPN, tire size, and four-tire price
Confirm the TerrainContact A/T 265/70R17 115S MPN 15506840000 installation procedure and hardware before ordering.
Fitment
Confirm load range, rim width, and diameter, and keep the offset inside the checked +18 to +32 mm window.
Confirm the exact Bridgestone Dueler A/T Ascent 255/70R18 113T MPN 009704 application for Chevrolet Silverado 1500 current light-duty trucks before ordering.
Confirm the exact Continental TerrainContact A/T 265/70R17 115S MPN 15506840000 application for Chevrolet Silverado 1500 current light-duty trucks before ordering.
Choose it when
You run Trail Boss 20s and want a tall, winter-rated LT all-terrain.
Choose the Dueler A/T Ascent 255/70R18 113T MPN 009704 when it is the exact match for your truck and the BFGoodrich All-Terrain T/A KO3 LT275/65R20 and the Continental TerrainContact A/T 265/70R17 115S MPN 15506840000 do not list your application.
Choose the TerrainContact A/T 265/70R17 115S MPN 15506840000 when it is the exact match for your truck and the BFGoodrich All-Terrain T/A KO3 LT275/65R20 and the Bridgestone Dueler A/T Ascent 255/70R18 113T MPN 009704 do not list your application.
Current decision file

BFGoodrich All-Terrain T/A KO3 LT275/65R20

Part LT275/65R20-KO3

Best for
Silverado Trail Boss owners on 20s who want a snow-rated aggressive A/T.
What's included
LT275/65R20, about 34.1 inch, 7.5-9.5 inch rim range; severe-snow-rated, newer KO3 construction.
Product approach
Confirm exact size, load range, rim-width range, and service description before comparing seller prices.
Install burden
Mount, balance, and TPMS relearn; set LT pressures. Confirm full-lock clearance for a 34-inch tire.
Fitment
Confirm load range, rim width, and diameter, and keep the offset inside the checked +18 to +32 mm window.
Choose it when
You run Trail Boss 20s and want a tall, winter-rated LT all-terrain.
How we compared

Compared from exact part-number documents, documented fitment, included hardware, install notes, and current seller access. Retailer star ratings are not treated as proof of what owners think.

Wheel & tire owned fitment checklist visual
Visual unavailable
Illustration
Where to buy it

Price references

No paid offer is live here. Treat any price shown as a reference only, and use the other retailer searches below to check current availability.

No current price reference

Use the retailer searches below and confirm the exact manufacturer part number before ordering.

Other retailers to check

These other-retailer searches use the brand and part number shown on this page. We earn nothing if you buy through them.

Other retailer

SimpleTire

An online tire seller sorted by brand and size, useful for lining up the exact size, load range, and quantity.

Browse by tire brand, then confirm the exact size, load range, quantity, and service description.

Browse tire brands
Other retailer

Summit Racing

House fitment data and manufacturer spec sheets ride along on their pages, which makes it a good spot to sanity-check the part number.

Search with the brand and part number shown on this page, then confirm the manufacturer part number before ordering.

Search Summit Racing
Other retailer

Walmart

A broad marketplace where third-party sellers vary widely, so check who is actually selling and how returns work.

Search with the brand and part number shown on this page, then verify the exact seller, item condition, fitment, and return terms.

Search Walmart

Price checks build up as sellers are rechecked over time. The seller's checkout page has the final say; make sure stock, exact SKU, and seller details all agree before you order.

Report an issue
Decision trail Check these before you buy.
Part BFGoodrich All-Terrain T/A KO3 LT275/65R20 Part LT275/65R20-KO3. BFGoodrich resource available.
Fits 2019-2026 Chevrolet Silverado 1500 fourth-generation trucks This tire size is useful only when the full wheel-and-tire setup is checked. The LT275/65R20 size has to stay inside the Silverado 1500 LT Trail Boss 4x4 Crew Cab route's 34.2 inch tire-diameter limit and must be paired with the right load, rim width, and wheel offset.
Watch for Wheel & Tire Clearance checkout checks Confirm load rating, wheel offset, tire diameter, rubbing risk, TPMS needs, and spare-tire planning before checkout.
Other retailer · Seller 3 other retailer searches Search with the brand and part number shown here, then confirm the exact part and fitment with the retailer.
Photos Category visual The photo shows the category, not this exact part; an exact product photo appears once image rights are confirmed.
If unsure Compare, read, or report If the seller page, vehicle details, or photos do not line up, compare sellers, read the guide, or report the issue.
The evidence

Fitment and install resources

Reviewed 2026-06-22

Editorial method

What we checked on this page

We check the BFGoodrich All-Terrain T/A KO3 LT275/65R20 for exact part identity, seller options, stock and price dates, photo rights, and official resources. FitmentPilot combines automated vehicle database indexing with human automotive editorial review. Rather than presenting generic affiliate catalogs, our system evaluates the exact mechanical constraints of each chassis platform — from bolt circle geometry and motion ratios to factory package exclusions — giving truck owners complete confidence before checkout.

Sellers3 seller destinations

Paid offers and other retailer searches are labeled separately so you can choose where to check.

FreshnessConfirm stock at the retailer

Check current stock and price with the retailer before ordering.

PhotosCategory visual only

This photo shows the part category, not this exact product. Confirm SKU, size, and kit contents before ordering.

Resources2 official resources

Install, fitment, spec, or warranty resources are available before checkout.

An exact product photo appears here once image rights are confirmed.

Choose it, pass, or verify

A newer severe-snow-rated all-terrain tire for Silverado Trail Boss shoppers who want KO2-style familiarity with updated KO3 construction and current LT275/65R20 specs.

Choose it if

  • BFGoodrich All-Terrain T/A KO3 LT275/65R20 is best for shoppers who want a newer premium all-terrain with severe-snow credibility and a familiar bfgoodrich truck-tire story
  • Confirm exact size, load range, rim-width range, and service description before comparing seller prices.
  • Keep the Silverado 1500 LT Trail Boss 4x4 Crew Cab wheel offset and clearance limits visible because tire diameter alone does not prove the package fits.
  • This tire size is useful only when the full wheel-and-tire setup is checked. The LT275/65R20 size has to stay inside the Silverado 1500 LT Trail Boss 4x4 Crew Cab route's 34.2 inch tire-diameter limit and must be paired with the right load, rim width, and wheel offset.

Pass if

  • The BFGoodrich All-Terrain T/A KO3 LT275/65R20 is not the right choice when your truck falls outside 2019-2026 Chevrolet Silverado 1500 fourth-generation trucks, or its trim, engine, and package cannot be matched to the documented application.
  • Pass when this exclusion applies: Wrong load range or service description
  • Choose another size or construction when load capacity, wheel width, offset, rubbing clearance, ride, or spare-tire needs point elsewhere.

Verify

  • Load range and service description
  • Rim width and tire diameter
  • Wheel offset and full-lock clearance
  • The checked route is a 2024 Silverado 1500 LT Trail Boss 4x4 Crew Cab with factory-lift planning. Lower LT/RST trims, ZR2, heavy towing setups, aftermarket lifts, brake packages, and GMC Sierra equivalents need their own seller and clearance checks before inheriting this answer.
Workshop & DIY Guidelines

BFGoodrich All-Terrain T/A KO3 LT275/65R20 Installation & Fitment Protocol

Wheel fitment is governed by three interrelated geometric factors: bolt circle diameter, wheel offset (ET in millimeters), and backspacing (inches from the back lip to the mounting surface). Lower or negative offset wheels push the tire outward for an aggressive stance, which increases the scrub radius and swings the outer shoulder into bumper valances and cab mounts during steering.

Install Difficulty

Shop & Bench Specs

Difficulty: Beginner (1/5)

Estimated Install Time: 1.0 – 1.5 hours (Wheel Mounting & TPMS Pairing)

Required Tools

Installation Equipment

  • Floor jack & jack stands
  • 1/2" Drive calibrated torque wrench
  • Thin-wall protective lug nut socket set (prevent wheel finish damage)
  • Tire pressure gauge
Post-Install Safety

Post-Install Protocol

  • Torque lug nuts in a criss-cross star pattern to manufacturer spec in two stages (first 50%, then 100%).
  • Perform mandatory re-torque check after 50 to 100 driving miles.
  • Verify full steering lock-to-lock clearance at ride height and during full suspension compression.

Wear Triggers & Maintenance Checks

  • Wheel bearing stress and premature hub assembly wear when running extreme negative offset (-12mm to -44mm).
  • Cupping or feathering wear on oversized tires when run at incorrect cold inflation pressures.
  • Caliper bracket scoring if wheel inner barrel clearance is under 3mm.

Chassis Fitment Context

GM T1XX front IFS operates on an approximate 1:1.72 motion ratio. A 1.15-inch lower strut mount spacer creates 2.0 inches of net lift. Because factory upper ball joint cups sit at an aggressive angle from the factory, leveling beyond 2.0 inches requires aftermarket tubular upper control arms to restore droop travel and ball joint range of motion.

Debuting in 2019, the T1XX platform introduced lightweight mixed-material construction with aluminum outer closures. In 2022.5 (Refreshed interior models), GM redesigned the electronic cockpit, updated steering knuckles, and made 13.4-inch displays standard on LT and above, while suspension geometry remained uniform across 2019-2026 model years.

Pre-Installation Unboxing Verification Checklist

Step 01: Confirm Physical SKU & Labeling

Inspect outer box label against your order invoice and the manufacturer part number shown here before opening hardware bags.

Step 02: Dry-Fit & Hardware Inventory

Unpack fasteners, brackets, and instructions. Perform a preliminary dry-fit check against the vehicle before removing factory components.

Step 03: Review Torque & Thread Requirements

Identify critical torque values and whether thread locker (Blue Loctite) or anti-seize compound is required by the manufacturer.

Step 04: Plan Post-Install Calibration

For suspension, steering, or lighting parts, schedule a professional alignment and verify forward-facing ADAS sensor calibration.