Considering the purchase of a high-mileage, modified 2011 BMW 325d Touring (3.0L). Courageous or foolish?

[QuirkEinstein]

Greetings to all, I am considering a 2011 BMW 325d Touring with a 3.0L engine and require a verification of its suitability. Although it has considerable miles, the maintenance history appears exceptionally robust.
The Specifications:


Model: BMW 325d Touring (Automatic Transmission, 6-Speed)
Engine: 3.0 Diesel (Standard: 204 HP / Modified: 314 HP & 650 NM)
Mileage: 340,000 kilometres (about 211,000 miles)
Modifications: ECU Calibration and Gearbox Optimisation (xHP or equivalent)

The Positive Aspects:

Timing chain rebuilt at 325,000 kilometres (significant advantage!).
Comprehensive service history with revenues amounting to over 100,000 DKK (~€13,500).
Recently serviced and possesses a valid MOT.
Excellent specifications: Panoramic roof, Xenon headlights, leather upholstery, navigation system, parking distance control.

The Capture:

It is offered as a wholesale/trade-in vehicle ("Afhentning"), signifying the absence of a dealer warranty.
It is significantly modified, with an increase from 204 HP to 314 HP.

The vehicle appears immaculate both internally and externally. Considering the new timing chain and service history, would you deem this a reasonable purchase, or does the combination of 340,000 miles and extensive tuning pose a significant risk?
I appreciate your assistance in advance.

[guyskin]

Taking into account the mileage and the wholesale/trade-in factors, it appears to be a favourable pricing. A properly driven and maintained BMW can exceed 340,000 km. I would pursue it.

[Darrellll]

If it originates from an automotive business, there are possibly EU regulations that safeguard you for a specified duration, irrespective of the dealer's assertion of no warranty. Verify that first; nonetheless, 211,000 miles is negligible for a contemporary diesel engine.

[Screwdriver_1]

That seems acceptable to me as well.
Maintain oil changes every 6,000 to 7,000 miles or annually, and it should remain reliable for many additional miles.

[Howard_silver]

It is likely that components such as belts, harmonic balancers, and suspension will require replacement, along with potential injector issues. However, if the price is reasonable, it is advisable to proceed and conduct a thorough test drive.

[guyskin]

Inform us of your progress.