315/40 R21 Winter Tires – Used

The 315/40 R21 tire size is one of the widest winter tire formats on the market and is predominantly used on ultra-large performance SUVs, luxury vehicles, high-end electric SUVs, and heavy hybrid models. The massive width of 315 mm ensures an exceptionally large contact patch, which means that traction, braking power, lateral guidance, and stability remain at the highest level even in winter conditions.

Vehicles in this category typically feature:

• extremely high axle loads,

• large & sensitive braking systems,

• powerful internal combustion or electric powertrains,

• precise all-wheel drive systems (Quattro, xDrive, 4Matic, AWD),

• sporty-luxurious chassis tuning.

This makes a detailed technical inspection of used winter tires essential. Reifenshop Landshut ensures that every model has sufficient residual tread, functional sipes, an extremely stable carcass, impressive run-out quality, and an OEM-compliant rolling circumference.

✔ Vehicle types that frequently use 315/40 R21

Ultra-Luxury & Performance SUVs

• BMW X7

• Mercedes GLS (AMG Line variants)

• Audi Q8 / SQ8 / RSQ8

High-End Electric SUVs

• BMW iX (higher performance variants)

• Audi e-tron S

• Luxury EV SUVs with extremely high torque

Premium Hybrid Vehicles

• Plug-in hybrid variants of large SUV models

All-wheel drive vehicles (AWD/4x4)

• require uniform tread depths

• extremely sensitive to rolling circumference differences

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

1. Winter-relevant tread depth

We check:

• high residual tread value required

• even wear despite extreme width

• functional winter sipes

2. DOT analysis & material aging

Checkpoints:

• manufacturing date

• elasticity of the rubber compound at low temperatures

• possible material hardening

3. Tread & sipe architecture

Very important for:

• traction on snow & ice

• stable cornering despite vehicle weight

• shorter braking distances

4. Carcass & structural inspection

We check for:

• no cuts, cracks or bulges

• no carcass fractures

• reinforced bead areas for XXL rims

5. Run-out & vibration test

Relevance for:

• smooth running despite XXL contact patch

• stability at highway & winter speeds

6. Load & speed indices (LI/SI)

Essential for:

• heavy electric vehicles

• large luxury SUVs

7. Air tightness test

Every tire is fully tested for pressure loss.

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

Each tire is inspected for:

• digital tread depth measurement

• DOT & aging analysis

• tread & sipe performance

• carcass integrity (reinforcements, sidewall stability)

• run-out & vibration analysis

• air tightness test

• OEM-correct rolling circumference

→ Only technically perfect tires make it into the Reifenshop Landshut assortment.

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

We offer:

• tested premium winter tires for XXL SUVs

• different DOT & tread depth levels

• XL/EL versions with high load capacity

• suitable models for performance SUVs, luxury SUVs, hybrids & EVs

• budget-friendly alternative to new tires

🔍 Simply choose suitable used winter tires

With the Reifenshop Landshut vehicle filter
(Manufacturer → Model series → Model designation)
you will only receive tires that:

• are fully compatible with 315/40 R21

• meet load capacity & speed requirements

• exactly match the OEM rolling circumference

• are ideally suited for high-end SUVs, hybrid & EV models, and AWD

→ Incorrect purchases excluded.

⭐ Why Reifenshop Landshut?

• strictly inspected used winter tires in 315/40 R21

• documented DOT & tread depth values

• fast Europe-wide delivery

• premium brands at attractive prices

• maximum winter performance & structural safety

Order tested used winter tires in 315/40 R21 now – extremely wide, extremely stable & winter-ready!