Warranty & Guarantee Information

At Best & Better, we stand behind the quality of our products. We offer clear and fair warranty coverage on all our JDM Engines and Semi-Truck Tires. Please read the following terms and conditions carefully to understand your coverage.


Warranty for JDM Engines

1. Warranty Duration:

  • Limited Parts-Only Warranty: 90 days from the date of purchase.

2. What is Covered:
This warranty covers the replacement cost of a certified, like-for-like JDM engine in the event of a major internal failure.

  • Engine Block: Cracks or irreparable damage to the block itself.

  • Cylinder Head(s): Cracks or warping that renders the head unusable.

  • Internal Rotating Assembly: Catastrophic failure of crankshaft, connecting rods, or pistons.

  • Note: The engine must have been installed by a certified mechanic.

3. What is Not Covered (Exclusions):

  • Any and all labor costs for diagnosis, removal, or installation.

  • Gaskets, seals, belts, hoses, filters, and consumables.

  • External components such as alternators, starters, power steering pumps, A/C compressors, distributors, sensors, and turbochargers (unless sold as part of a complete engine set).

  • Damage resulting from improper installation, timing belt/chain failure, negligence, abuse, lack of maintenance, overheating, detonation, or use of incorrect fluids/fuels.

  • Normal wear and tear and minor issues like oil consumption, smoke, or leaks.

  • Any engine that has been modified, tuned, or used for racing.

4. Claim Process:

  1. Contact Us: Immediately notify us via email at info@bestandbetterusa.com upon discovering an issue. Please include your order number.

  2. Professional Diagnosis: A certified, third-party mechanic must provide a written report and photos/videos detailing the failure and its cause.

  3. Approval: We will review the report. If the failure is covered under this warranty, we will ship a replacement engine.

  4. Return: The defective engine must be returned to us (shipping costs covered by us) in the condition it was removed.


Warranty for Semi-Truck Tires

1. Warranty Duration & Type:

  • Tread Life (Mileage) Warranty: Pro-rated coverage based on the manufacturer’s original tread life warranty.

  • Workmanship & Materials Warranty: Varies by brand, typically 3 to 5 years from the date of manufacture.

2. What is Covered:

  • Mileage Warranty: If the tire wears out before the advertised mileage, you will receive credit towards a new tire based on the remaining tread depth and the original purchase price.

  • Workmanship Warranty: Covers defects in materials or workmanship, such as tread separation, belt separation, or sidewall failures under normal highway service conditions.

3. What is Not Covered (Exclusions):

  • Road hazard injuries (cuts, punctures, impact breaks).

  • Damage from improper mounting/dismounting, underinflation, overinflation, or misalignment.

  • Irregular wear due to mechanical issues (bad shocks, worn suspension, etc.).

  • Damage from off-road use, abuse, fire, vandalism, or accidents.

  • Tires that have been repaired, retreaded, or altered.

  • Tires worn beyond the tread wear indicators (below 2/32nds of an inch).

4. Claim Process:

  1. Inspection: The tire must be inspected by a certified commercial tire dealer.

  2. Documentation: Email the dealer’s inspection report, clear photos of the tire and DOT number, and your original proof of purchase to info@bestandbetterusa.com.

  3. Assessment: We will process the claim based on the manufacturer’s guidelines and provide a pro-rated credit or replacement.


General Terms for All Warranties

  • Proof of purchase is required for all warranty claims.

  • All warranty communications must be initiated via email to info@bestandbetterusa.com.

  • This warranty is non-transferable and applies only to the original purchaser.

  • Best & Better reserves the right to be the final arbiter of any warranty claim.

  • This warranty gives you specific legal rights, and you may have other rights which vary from state to state.