Tarox 338mm Front Brake Discs/Rotors for BMW 1 Series Convertible/Cabriolet (E88) 135i - Vented OE-Size Performance Upgrade, Grooved/Slotted or Drilled & Grooved (G88, F2000, Sport Japan) | Direct Fit Replacement Pair

Tarox 338 mm Front Rotors for BMW 1 Series Cabriolet E88 135i

Transform the way your 135i pulls up with premium Tarox front rotors in the factory 338 mm size. Built for drivers who want sharper response, cooler running and repeatable stopping on spirited road drives and track days, these ventilated front rotors are a direct-fit, stock-size upgrade for the BMW 1 Series Convertible E88 135i. Expect crisper pedal feel, improved modulation and excellent fade resistance without compromising daily drivability.

Fitment

• Model: BMW 1 Series Convertible E88 135i
• Axle: Front
• Type: Ventilated rotor set
• Diameter: 338 mm
• Direct-fit replacement for the original front discs

Why Tarox

• Made from high-grade castings for precise fit and dependable performance
• Heat treated to enhance strength and resist distortion under repeated heavy braking
• CNC machined then hand finished for an ultra-smooth contact face
• Surface ground to around 0.015 mm for a stable, confidence-inspiring pedal
• Superior gas evacuation and cooling to cut fade on fast road and track
• TUV-approved castings with many applications certified for road use

We run Tarox hardware on our own builds and we have installed countless sets for customers. Feedback is consistently positive on bite, control and temperature stability. Pair with quality performance pads for the best results.

Choose your pattern

G88 – multi-groove cooling focus

The iconic G88 machining uses multiple radial grooves to generate a turbine effect that evacuates heat and gases quickly. Ideal if you want maximum bite and heat control from a 338 mm front setup on your E88 135i.

F2000 – curved groove all-rounder

Curved grooves refresh pad faces and stabilise temperatures for hard road use and regular track sessions. Fewer grooves than G88 for a great balance of durability and heat management.

Sport Japan – drilled and grooved

Fully drilled with countersunk holes and six sweeping grooves for instant response and effective degassing. Serious performance with road legality on many applications, plus a purposeful look behind the wheels.

Build quality you can feel

Each rotor is stress relieved after every machining stage. The result is a mirror-smooth braking surface, minimal runout and consistent performance that outclasses standard components while retaining stock dimensions for a true bolt-on upgrade.

Recommended pad pairing

For fast road, a friction compound similar to Tarox Strada complements these rotors perfectly. For track-focused cars, a compound comparable to Tarox Corsa offers greater temperature tolerance. Match pad choice to your driving style and tyre capability.

Professional installation

Want it fitted right first time? Book expert installation with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

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