Nissan Skyline R34: what kind of drive do different modifications have and how does it affect the car’s behavior?

Legendary Nissan Skyline R34 (1998–2002) is one of the most iconic JDM cars, whose name is associated with drifting, tuning and racing victories. But when choosing this model, many people get confused: what kind of drive does the R34 have?? The answer depends on the specific modification - on budget versions with classic rear-wheel drive (FR) to top GT-R with revolutionary all-wheel drive system ATTESA E-TS.

In this article we will analyze all drive options Skyline R34, their technical features, pros and cons, and also give recommendations for choice depending on your driving style. If you are planning a purchase, tuning, or are simply interested in the history of the model, here you will find comprehensive answers, including rare nuances that even experienced owners are silent about.

Modifications of Nissan Skyline R34 and their drive types

Ruler R34 included more than 10 different versions, but according to the type of drive they can be divided into three categories:

• 🔴 Rear-wheel drive (FR): 25GT, 25GT-X, 25GT-T, 25GT-V, 25GT-FOUR (yes, despite the name, GT-FOUR in R34 it’s FR!).
• 🟢 All-wheel drive (AWD): only GT-R (including versions V-Spec, V-Spec II, M-Spec, Nur-Spec).
• 🟡 Hybrid systems: optional 4WS (steering rear wheels) on some FR modifications.

Important: all Skyline R34 with turbo engines (RB25DET, RB26DETT) were initially equipped with rear-wheel drive, except GT-R. Even 25GT-T with a turbine is FR, which often comes as a surprise to beginners. All-wheel drive was exclusive to GT-Rwhere the system was used ATTESA E-TS Pro (more about it below).

When choosing a modification, keep in mind that FR versions are easier to maintain and tune, whereas GT-R requires more attention to the transmission and electronics. For example, replacing the clutch with GT-R costs 2–3 times more due to the complexity of disassembling the all-wheel drive system.

ATTESA E-TS: how all-wheel drive works on the GT-R R34

System ATTESA E-TS Pro (Advanced Total Traction Engineering System for All-Terrain) is Unique to Nissan, combining electronic clutch control and mechanical differential. B GT-R R34 she got a console Pro, which means improved response to changing road conditions.

During normal driving ATTESA distributes torque in the ratio 95% on the rear axle and 5% on the front. However, when the rear wheels slip, the electronics redirect up to 50% of torque at the frontusing:

• 📡 Wheel speed sensors (one for each wheel).
• 🖥️ Electronic control unit (ECU), analyzing data from ABS and steering angle sensors.
• ⚙️ Multi-plate clutch in the transfer case, which is hydraulically locked.

Key Advantage ATTESA E-TS Pro before competitors (for example, Subaru Symmetrical AWD) — instant reaction. In tests on ice GT-R R34 showed acceleration time to 100 km/h 0.3–0.5 seconds faster than rear-wheel drive versions, due to the absence of slipping at start.

Parameter	ATTESA E-TS (R32/R33)	ATTESA E-TS Pro (R34)
Max. torque distribution (front/rear)	30% / 70%	50% / 50%
System response time	~100 ms	~50 ms
Coupling type	Electromagnetic	Hydraulic multi-disc
ABS integration	No	Yes (collaboration)

However, the system also has weaknesses. For example, clutch overheating during aggressive driving (for example, on a track) may lead to temporary loss of all-wheel drive. In such cases GT-R automatically switches to mode pseudo rear-wheel drive, as indicated by the indicator on the dashboard.

Rear-wheel drive (FR) on Skyline R34: simplicity vs. drift

Most modifications R34 (including turbocharged 25GT-T) were equipped with classic rear-wheel drive with limited slip differential (LSD). This solution had several key advantages:

• ⚡ Lightweight design: the absence of front-wheel drive and transfer case reduces weight by ~100–150 kg compared to GT-R.
• 🔧 Ease of maintenance: Replacing the clutch, axle shafts or rear axle gearbox is cheaper.
• 🎯 Predictable behavior: FR is ideal for drifting and sporty driving on dry pavement.

However, there are also disadvantages. For example, slipping at start on wet or icy roads - a common problem 25GT-T with a power of 280 hp. (according to Japanese standards). This can be solved by installing differential lock (For example, Nismo or Cusco), but this requires additional investment.

Interesting fact: some owners GT-T install all wheel drive conversion kits from GT-R, but this is an extremely expensive process (from $10,000+), requiring a motor swap for RB26DETT, transmission replacement and ECU flashing.

How to distinguish FR from AWD by VIN code?

In VIN code Skyline R34 The 8th character indicates the drive type:

- H — rear-wheel drive (FR)

- K — all-wheel drive (AWD, GT-R only)

Example: BNR34-100000K - this is GT-R with AWD, and ER34-250000H — 25GT-T with FR.

Comparison of FR and AWD: which is better for your applications?

The choice between rear-wheel drive and all-wheel drive depends on the purpose of use. Below is a comparative table taking into account the real experience of the owners:

Criterion	Rear-wheel drive (FR)	All-wheel drive (AWD)
Purchase cost	↓ 30–50% cheaper GT-R	↑ Prices for GT-R start from $80,000+
Service	↓ Simpler and cheaper (no transfer case, front drive shafts)	↑ Difficult diagnostics ATTESA, expensive clutch
Drift	↑ Ideal for controlled drift	↓ Only possible with all-wheel drive disabled (risk of overheating)
Time trial	↓ Loses on wet/slippery tracks	↑ Better start and stability at high speeds
Tuning potential	↑ It’s easier to swap a motor (for example, on RB26 or 2JZ)	↓ Limited by compatibility with ATTESA

If your goal is drift or street racing, the optimal choice is 25GT-T with FR and installed 2-way LSD. For track races or driving in difficult weather conditions would be better suited GT-R, but be prepared for high maintenance costs.

Common problems with the R34 drive and how to avoid them

Both types of drive Skyline R34 have typical “diseases” that you should know about in advance:

🔴 Problems with rear-wheel drive versions (FR):

• 🛠️ Axle wear: on machines with power above 300 hp. standard axle shafts break during aggressive starts. The solution is to install reinforced shafts (for example, Nismo or Driveshaft Shop).
• 🔥 Differential overheating: During long-term drift, the oil in the rear axle gearbox loses its properties. It is recommended to replace it with synthetic oil (for example, Red Line 75W90 NS) and installation of an additional radiator.

🟢 Problems with all-wheel drive versions (AWD):

• ⚠️ ATTESA malfunctions: Most often the steering angle sensor or hydraulic pump fails. Symptoms: jerking during acceleration or constant operation in FR mode.
• 🔋 Battery problems: system ATTESA sensitive to voltage sags. If the battery is discharged, all-wheel drive may be disabled.

⚠️ Attention: Never tow GT-R R34 with the front or rear axle suspended over a distance of more than 50 meters! This will damage the differentials and clutch. ATTESA. For transportation, use only a fully loaded tow truck.

For prevention it is recommended:

Check the oil level in the transfer case every 20,000 km|Change the oil in the rear axle gearbox every 50,000 km (for FR) or 30,000 km (for AWD)|Diagnose ABS and ATTESA sensors once a year (especially before winter)|Use only original spare parts for ATTESA (non-Chinese analogues)|Check the play in the drive shafts at every maintenance-->

Is it possible to convert FR to AWD and vice versa?

Technically conversion possible, but this is one of the most difficult and expensive tuning projects for Skyline R34. Let's consider both options:

🔄 FR → AWD (install all-wheel drive on 25GT-T)

To do this you will need:

1. Swap motor on RB26DETT (since RB25DET not compatible with ATTESA).
2. Installation of the transfer case, front gearbox and drive shafts from GT-R.
3. Replacing the rear gearbox with a version with ATTESA-compatible differential.
4. ECU firmware for work with all-wheel drive system.

The cost of such a project in Russia or CIS countries starts from 1,500,000 rubles, and in Japan or the USA - from $15,000. At the same time It is almost impossible to legalize such changes in the traffic police.

🔄 AWD → FR (disable all-wheel drive on GT-R)

Some owners GT-R turn off ATTESA for drifting, but this is fraught with:

• 🚨 Transfer case overheating (the system is designed for constant oil circulation).
• 🔧 Accelerated wear of the coupling, even if it is not enabled.
• 📉 Reducing the cost of a car upon resale.

⚠️ Attention: Shutdown ATTESA By removing a fuse or disconnecting sensors, the ECU will activate the emergency mode. In this case, the engine limits power to ~200 hp, and the CHECK ENGINE.

If you need drift car, it’s more rational to buy 25GT-T and invest in tuning the suspension and differential rather than trying to redo GT-R.

FAQ: answers to frequently asked questions about the Skyline R34 drive

❓ Is it possible to install all-wheel drive from the GT-R on the Skyline R34 25GT-T?

Technically yes, but this requires a complete replacement of the transmission, motor (RB26DETT), transfer case, front gearbox and ECU firmware. The cost exceeds reasonable limits, so such projects are extremely rare. Much cheaper to buy GT-R in stock configuration.

❓ Why does all-wheel drive sometimes not work on the GT-R R34?

Most often this is due to:

1. Overheating of the coupling ATTESA (you need to let the system cool down).
2. Low oil level in the transfer case (add Nissan Matic D).
3. Faulty steering angle sensor or ABS sensors.
4. Discharged battery (voltage below 11.5V switches off ATTESA).

Use a scanner for diagnostics Consult II or its equivalent - it will show specific system errors.

❓ Which differential is better for drifting on the R34 FR?

Optimal options:

• 1.5-way LSD (For example, Nismo or Cusco) - a universal choice for the street and track.
• 2-way LSD - for professional drifting, but requires control skills.
• Welded diff (welded differential) - only for experienced drivers, as the car will “throw” into skids.

For beginners we recommend 1.5-way with a locking rigidity of 40–60%.

❓ How much does ATTESA service cost on GT-R R34?

Costs depend on the state of the system:

• Changing the oil in the transfer case: ~5,000 rub. (every 30,000 km).
• ATTESA coupling repair: from 50,000 rub. (replacement of disks and seals).
• Complete overhaul with pump replacement: from 200,000 rub.
• Diagnostics with error reading: ~10,000 rub.

Advice: look for a professional who specializes in Nissan with the system ATTESA - ordinary service stations often do not have experience working with this transmission.

❓ Which drive is more reliable on the R34 for daily driving?

For everyday use rear-wheel drive versions (FR) more reliable and cheaper to maintain. Four-wheel drive ATTESA on GT-R requires:

• Regularly check the oil in the transfer case (every 10,000 km).
• Careful driving in winter (the system does not like long slips).
• More frequent clutch replacement (due to high loads).

If you don't need racing performance, 25GT-T with FR it will be more practical.