315/40 R21 Sommerreifen – Neu

The tire size 315/40 R21 is one of the extremely wide premium dimensions for luxury SUVs, high-performance off-roaders, and modern electric vehicles.
With a massive 315 mm tire width and a balanced 40-series aspect ratio, this dimension offers:

• extreme traction for heavy vehicles

• maximum lateral stability

• reliable braking performance on dry & wet roads

• smooth, stable rolling behavior

• controlled handling even at high speeds

This tire size is designed for vehicle platforms that combine high torque, all-wheel drive traction, and large braking systems.
Reifenshop Landshut exclusively supplies new summer tires with current DOT, verified LI/SI values, and OEM-compliant rolling circumference.

✔ Vehicle types that often use 315/40 R21

High-Performance SUVs

• Mercedes GLS / GLS AMG

• BMW X7

• Audi Q8 / SQ8

• Range Rover & Range Rover Sport

Luxury & Upper-Class SUVs

• Mercedes GLE / GLS

• Lexus LX

• Cadillac Escalade (depending on equipment)

Large Electric Vehicles (EV)

• BMW iX

• Mercedes EQS SUV

• Audi Q8 e-tron

• Tesla Model X (modifications)

→ Load-bearing XL/Reinforced versions are mandatory.

🔧 Technical characteristics of tire size 315/40 R21

1. 315 mm width – maximum contact area

Enables:

• exceptional traction

• high power transmission

• stability for heavy vehicles

2. 40-series aspect ratio – stable & comfort-oriented

Offers:

• good damping despite wide width

• reduced sidewall movement

• controlled cornering performance

3. 21-inch rims – modern high-end standard

Advantages:

• compatible with large brake systems

• precise, balanced driving dynamics

• impressive look for luxury SUVs

4. Load & Speed Indices

Typical:

• SI: W, Y

• very high load capacity range

• always XL/Reinforced structures

5. EV/Hybrid Optimizations

Premium tires offer:

• reinforced casings for EV weight

• rolling resistance optimized compounds

• noise-reduced profiles

🛠 Reifenshop Landshut Testing Procedure for New 315/40 R21 Summer Tires

Each tire is tested for:

• DOT currency

• run-out stability & structural integrity

• correct LI & SI values

• OEM-compliant rolling circumference

• tread & manufacturing quality

→ Only technically flawless tires enter the Reifenshop Landshut assortment.

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

We offer:

• Premium SUV Summer Tires
  – Michelin Latitude / Pilot Sport SUV
  – Continental PremiumContact / SportContact
  – Pirelli Scorpion / P Zero
  – Bridgestone Alenza

• EV-/Hybrid-compatible models

• XL/Reinforced versions

• comfort- & performance-oriented profiles

• Budget & Mid-range alternatives

🔍 Easily select suitable summer tires

With the Reifenshop Landshut vehicle filter
(Manufacturer → Model Series → Model Name)
you will only receive suitable tires that:

• are 100% compliant with size 315/40 R21

• meet load capacity & speed requirements

• precisely adhere to the OEM rolling circumference

• are suitable for SUVs, luxury vehicles & electric vehicles

→ No incorrect purchases.

⭐ Why Reifenshop Landshut?

• tested new summer tires in 315/40 R21

• fast Europe-wide delivery

• extreme stability, grip & durability

• OEM-compliant technical accuracy

• large selection for luxury & performance SUVs

Order new 315/40 R21 summer tires now – extremely wide, powerful & perfect for demanding SUV platforms.