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  3. AUDI 4M0505235CH

AUDI 4M0505235CH Rear Wheel Steer 4M0-505-235 RSQ8 0N5

fits model: Q7, Q8. make: Audi. year: 2017–2025.

4m0505235ch Audi 2017-2025 Genuine Q7 Q8 Sq8 Rsq8 0n5 With Rear Wheel Steer Subframe Oem

( Manufacturer Part Number: 4M0505235CH ), ( Part Type: Wheel ), ( Ipn: 4m0-505-235-ch ), ( Features: No Drilling Required ), ( Vintage Part: No ), ( Finish: Painted ), ( Placement On Vehicle: Rear ), ( Country Of Origin: Germany )

Review AUDI Genuine Sq8 0n5 Rear Wheel Steer Subframe Oem fits Q7 Q8 2017–2025

The **Audi 4M0505235CH** is a high-performance, precision-engineered rear-wheel steering (RWS) module designed exclusively for Audi s **Q7, Q8, SQ7, and RSQ8** models spanning the production years **2017 through 2025**. This advanced electronic control unit (ECU) plays a critical role in enhancing the vehicle s dynamic handling, stability, and overall driving experience by integrating seamlessly with the **0N5 rear-wheel steering system**. Unlike conventional steering setups, the 0N5 system actively adjusts the rear wheels orientation in real-time, enabling sharper turns, improved cornering precision, and a more responsive feel particularly at higher speeds or during aggressive maneuvers. The module interfaces with the vehicle s **quadratic steering system**, which combines both front and rear axle steering angles to optimize traction, reduce understeer, and minimize body roll, making it ideal for both spirited driving and confident highway navigation. Built to Audi s rigorous standards, this component features robust **CAN bus communication**, ensuring flawless synchronization with the vehicle s **MMI infotainment system, adaptive cruise control, and traction control modules**. Its compact yet durable design incorporates high-grade materials to withstand the demands of daily driving, off-road adventures, and high-performance applications. Whether fitted to a **Q7 with its commanding SUV presence** or the **RSQ8 s track-inspired agility**, this steering module elevates the driving dynamics, offering a seamless blend of luxury and performance. For Audi enthusiasts seeking to restore or upgrade their vehicle s steering precision, the **4M0505235CH** is an essential component that bridges cutting-edge technology with Audi s legendary engineering heritage.

### **Pros and Cons of buying a Audi Q7/Q8 (4M0/0N5) with Rear-Wheel Steer (RSQ8/SQ8) 2017 2025 Models**

#### **Pros**

**1. Advanced Technology & Innovation**

The Audi Q7/Q8, particularly the **SQ8 and RSQ8**, are among the most technologically advanced luxury SUVs on the market. The **rear-wheel steer (RWS) system** (standard on SQ8/RSQ8, optional on Q8) enhances agility, making it feel more like a performance-oriented vehicle rather than a traditional SUV. This system improves cornering stability, reduces understeer, and enhances precision, especially at higher speeds.

**2. Exceptional Performance (SQ8/RSQ8)**

- The **SQ8 (4.0L V8 Biturbo)** produces **450 500 hp** and **510 lb-ft of torque**, paired with a **7-speed S tronic dual-clutch transmission**, delivering rapid acceleration (0 60 mph in 4.5 seconds).

- The **RSQ8 (4.0L V8 Biturbo)** is even more aggressive, with **550 hp**, **568 lb-ft of torque**, and a **0 60 mph time of 3.8 seconds** (with optional launch control).

- The **0N5 rear-wheel steer** system dynamically adjusts rear-wheel angles, improving handling without sacrificing stability.

**3. Luxury & Comfort**

- The **Q7 and Q8** offer a **spacious, premium interior** with high-quality materials, ambient lighting, and advanced infotainment (Virtual Cockpit, MMI Nav, wireless Apple CarPlay/Android Auto).

- **Adaptive air suspension** provides a smooth ride on highways while allowing for a sportier stance when engaged.

- **Quiet cabin** with excellent sound insulation, making long drives comfortable.

**4. Safety & Driver Aids**

- Standard **Audi Pre Sense (collision avoidance)** with **emergency braking, lane-keeping assist, and adaptive cruise control**.

- **360-degree camera** and **surround-view system** improve parking and maneuverability.

- **High-strength steel body** and **multiple airbag systems** enhance crash protection.

**5. Exclusivity & Brand Prestige**

- Audi s **Quattro all-wheel-drive system** is one of the best in the industry, providing near-perfect traction in all conditions.

- The **RSQ8 in particular** is one of the fastest and most exclusive SUVs, appealing to enthusiasts who want both luxury and performance.

**6. Resale Value & Ownership Perks**

- Audi maintains strong **resale value**, especially for well-maintained models.

- **Audi s warranty** (3-year/36,000-mile basic, 12-year/100,000-mile corrosion) provides long-term peace of mind.

- **Audi Center services** are reliable, though maintenance costs can be high.

---

#### **Cons**

**1. High Cost of Ownership**

- **Fuel economy is poor** (especially for the V8 models):

- **Q7/Q8 (3.0L TDI):** 20 22 MPG combined (better, but still not great).

- **SQ8/RSQ8 (4.0L V8):** 14 16 MPG combined (expect **$100 $150/month in fuel** at $3.50/gal).

- **Maintenance and repairs** are expensive due to Audi s premium parts and labor costs.

- **Tires, brakes, and suspension components** wear out faster than in smaller luxury cars.

**2. Size & Maneuverability Issues**

- The **Q7/Q8 are large vehicles** (Q7: 199" long, Q8: 188"), making parking and urban driving challenging.

- **Low ground clearance** (especially the Q8) can be an issue on rough roads or off-road conditions.

- **Rear-wheel steer (RWS) can be polarizing** some drivers find it disorienting at first, as the car feels less predictable in tight spaces.

**3. Complexity & Potential Reliability Concerns**

- The **dual-clutch transmission (S tronic)** in the SQ8/RSQ8 can be **less smooth** than a traditional automatic, requiring occasional calibration.

- **Electrical gremlins** (infotainment glitches, sensor issues) are common in Audi models, though newer generations (post-2020) have improved.

- **Turbocharged engines** (especially the V8) are prone to **carbon buildup**, which can reduce performance if not maintained properly.

**4. Limited Practicality for Some Drivers**

- The **Q7 s tall roof** can make headroom tight for very tall passengers.

- **Seating comfort** is excellent, but the **Q8 s rear seats** are less spacious than the Q7 s.

- **Cargo space** is generous but not as efficient as some competitors (e.g., BMW X5, Mercedes GLE).

**5. Depreciation & Market Demand**

- While Audi retains value well, **luxury SUVs depreciate faster** than performance cars (e.g., Porsche Cayenne).

- **Used market competition** is fierce buyers may find better deals on **BMW X5, Mercedes GLE, or Lexus LX** with similar features.

**6. Noise & Wind Noise at High Speeds**

- The **Q8 in particular** is known for **wind noise** at highway speeds, which can be distracting.

- **Road noise** is more noticeable than in some competitors (e.g., Genesis G90, Volvo XC90).

---

### **Conclusion**

The **Audi Q7/Q8 (especially the SQ8/RSQ8 with 0N5 rear-wheel steer)** is an **exceptional choice** for buyers who prioritize **performance, cutting-edge technology, and luxury** over practicality and fuel efficiency. The **RWS system** makes it one of the most engaging SUVs to drive, blending **SUV utility with sports car-like handling**.

However, **high running costs, size limitations, and complexity** make it a **less ideal choice** for:

- **Budget-conscious buyers** (fuel, maintenance, insurance).

- **Urban drivers** who need easy maneuverability.

- **Families prioritizing cargo space and rear comfort** over performance.

If you **love Audi s driving dynamics, want a fast luxury SUV, and can afford the ownership costs**, the **RSQ8 (or even the SQ8)** is a **fantastic purchase**. If you prefer **better fuel economy, lower maintenance, or a more practical SUV**, alternatives like the **BMW X5 M50i, Mercedes-AMG GLE 63 S, or Lexus LX 570** may be worth considering.

### **Final Recommendation**

**Buy the Audi Q7/Q8 (SQ8/RSQ8) if:**

You want **the best-in-class handling and performance** in a luxury SUV.

You **prioritize technology and exclusivity** over fuel efficiency.

You **drive mostly on highways and can afford high maintenance costs**.

You **enjoy Audi s brand prestige and Quattro AWD**.

**Avoid the Audi Q7/Q8 if:**

You **need a fuel-efficient, low-cost-to-own vehicle**.

You **frequently drive in tight urban areas** (parking and maneuverability are cumbersome).

You **prefer a more traditional SUV experience** without advanced steering systems.

You **cannot budget for premium maintenance** (expect **$1,500 $3,000/year** in additional costs beyond insurance).

**Best Alternative Considerations:**

- **For performance practicality:** **BMW X5 M50i** (more refined, better fuel economy).

- **For luxury tech:** **Mercedes-AMG GLE 63 S** (more spacious, similar V8 power).

- **For off-road capability:** **Porsche Cayenne Turbo S** (better handling, but more expensive).

- **For value:** **Lexus LX 570** (reliable, comfortable, but less engaging to drive).

If you re set on the **Audi Q7/Q8**, **focus on well-maintained examples with full service history** especially for the **V8 models**, as carbon buildup and turbo health are critical. The **RSQ8 is the most rewarding** but also the most expensive to own long-term.

Details:

REMOVED FROM A 2018 AUDI Q7 WITH REAR WHEEL STEERING OPTIONGOOD USED CONDITION - SEE PHOTOS, FITS 2017 2025 Q7, SQ7, Q8, SQ8 AND RS MATCH PART NUMBER 4M0505235CH, SHIPS DAILY Q8.

part #: 4m0505235ch prices

  • $989.00-$1399.99

specifications cartrimmouldings:

  • for models: Q7, Q8
  • for makes: Audi
  • for years: 2017-2025
  • mpn: 4m0505235ch
  • part type: Wheel
  • ipn: 4m0-505-235-ch
  • features: No Drilling Required
  • vintage part: No
  • finish: Painted
  • placement on vehicle: Rear
  • country of origin: Germany

returns cartrimmouldings:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 30 Days

payments cartrimmouldings:

  • other
  • cash
  • credit card: Discover
  • wallet: Paypal

general cartrimmouldings:

  • Car Truck Parts Accessories > Exterior Parts Accessories > Body Moldings Trims
  • condition: Used

seller cartrimmouldings:

  • city: Spartanburg, South Carolina
  • # reviews: 3179
  • rating: 99.9%

offer cartrimmouldings:

  • best offers: True
  • quantity: 1
  • started: April 17, 2026
  • sold: 0
  • availability: In Stock
  • options: Ship-to-home

shipping cartrimmouldings:

  • type: Fixed
  • class: Freight
  • service: Flat Rate Freight
  • cost: $275.00
for models: q7, q8, for makes: audi, for years: 2017-2025, part type: wheel, features: no drilling required, vintage part: no, finish: painted, placement on vehicle: rear, country of origin: germany,
category: auto parts > car truck parts accessories > exterior parts accessories > body moldings trims, sku: 14822196378982891,
Audi 4M0505235CH Is Similar To:
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5 offers $989.00–$1399.99 USD
  • New. Offer #1 priced at $1399.99 + $0.00 shipping estimate = $1399.99* total. Bolt Pattern: 5X112. Size: 22X10 Front and Rear.FREE SHIPPING
  • New. Offer #2 priced at $1269.00 + $0.00 shipping estimate = $1269.00* total. No claims accepted after 72 hours.FREE SHIPPING
  • Used. Offer #3 priced at $989.00 + $130.03 shipping estimate = $1119.03* total. These wheels are 100% original and include the Audi center cap. Made in Italy.+$130.03 shipping
  • New. Offer #4 priced at $1269.00 + $0.00 shipping estimate = $1269.00* total. FREE SHIPPING
  • New. Offer #5 priced at $1599.00 + $0.00 shipping estimate = $1599.00* total. WHEEL OFFSETS: 20 FRONT AND 20 REAR FINISH: GLOSS BLACK.FREE SHIPPING

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