315/40 R21 Summer Tires – Used

The dimension 315/40 R21 belongs to the extremely wide high-performance SUV tire sizes, which were developed for large luxury SUVs, sporty coupé SUVs, hybrid vehicles, and especially for high-torque electric vehicles.
With a width of 315 mm and a stability-oriented 40-series aspect ratio, this tire size offers:

• maximum traction

• exceptional lateral guidance

• high stability at high speeds

• extremely short braking distances

• precise steering response despite vehicle weight

Vehicles that use this size typically feature:

• very high axle loads (SUV/EV)

• large-dimensioned braking systems

• air suspension or adaptive chassis

• powerful all-wheel drives (xDrive, 4Matic, Quattro)

• above-average torque

Due to these stresses, used tires of this dimension must be inspected particularly rigorously, as even the smallest structural defects can have safety-critical implications.

✔ Vehicle types that frequently use 315/40 R21

Performance & Premium SUVs

• BMW X5 M

• BMW X6 M

• Mercedes GLE 63 AMG

• Audi SQ7 / RSQ8

Coupé SUVs & Sport SUVs

• Porsche Cayenne Turbo

• Range Rover Sport SVR

Electric & Hybrid SUVs

• BMW iX M60

• Audi Q8 e-tron (performance versions)

• Mercedes EQE / EQS SUV (variants)

All-wheel drive models (AWD)

• require precisely matched rolling circumference

• are particularly sensitive to tread depth & runout

🔧 Technical inspection criteria for used 315/40 R21 summer tires

1. Tread depth & wear analysis

Checked for:

• sufficient remaining tread depth

• even wear

• no thermal pre-damage

2. DOT analysis & material condition

Important due to EV/SUV high load:

• year of manufacture

• UV & heat aging

• elasticity of the rubber compound

3. Carcass & structure inspection

Essential for ultra-wide tires:

• no cuts, cracks, bulges

• no carcass or belt breaks

• reinforced sidewalls must be intact

4. Runout & vibration test

Relevant for:

• smooth high-speed running

• precise steering response

• EV-typical running smoothness

5. Load index & speed rating (LI/SI)

Required for:

• very heavy SUVs

• electric vehicles with battery weight

• extreme driving dynamics

6. Air tightness test

Every tire is intensely checked for pressure loss.

🛠 Reifenshop Landshut inspection procedure for used 315/40 R21 summer tires

All tires are checked for:

• digital tread depth measurement

• DOT analysis & material assessment

• carcass & structural integrity

• runout & vibration measurement

• air tightness

• OEM-specific rolling circumference values

→ Only technically flawless tires are included in the Reifenshop Landshut assortment.

🧊 Summer tire offer in 315/40 R21 (used) at Reifenshop Landshut

We offer:

• inspected used high-performance SUV summer tires

• various DOT & tread depth levels

• XL/Extra Load versions

• sporty-optimized premium profiles

• cost-effective alternatives to new tires

🔍 Easily select suitable used summer tires

With the Reifenshop Landshut vehicle filter
(Manufacturer → Model series → Model name)
you get tires that:

• are fully compatible with 315/40 R21

• meet load and speed indexes

• exactly match OEM rolling circumference

• are ideal for performance SUVs, coupé SUVs, hybrid & electric vehicles

→ Incorrect purchases excluded.

⭐ Why Reifenshop Landshut?

• rigorously inspected used summer tires in 315/40 R21

• documented DOT & tread depth values

• fast Europe-wide delivery

• premium quality for high-performance SUVs

• maximum safety, stability & performance

Order now inspected used summer tires in 315/40 R21 – extremely stable, wide & performance-oriented! 🚀