Stefan Roeder
Everything published on gti.parts carries this byline. Stefan Roeder is a pen name — the editorial desk behind the site, not one person's government name.
Why this site exists
gti.parts is a fitment-first parts hub for the VW GTI. Most of the money owners waste comes down to buying the right part for the wrong year, trim, or platform, so every pick here starts with what it actually fits and then works out to whether new aftermarket or used OEM is the smarter buy for that specific job.
What the byline stands behind is checkable: no invented prices, no fabricated specs, and no forced fitment claims where a fact cannot be verified. When something is model-year specific it is said plainly; when it cannot be verified it is left out.
How a page gets published
Five rules, applied to everything here:
- 1
Fitment first, always
Most of the money wasted on parts is spent on something that fits the other year, trim, or platform. Every pick here starts with what it actually fits, and the generation or engine code is called out explicitly rather than implied.
- 2
No invented prices or specs
Current pricing lives on the retailer product page or the seller’s live listing — never cached, estimated, or invented on-site. Specs that cannot be verified are left out rather than guessed at.
- 3
Two marketplaces, on purpose
New, aftermarket, and consumable parts go to Amazon with direct product links. Used, OEM, salvage, and hard-to-find parts go to live eBay Motors listings, where you can see the actual part number and the seller’s own photos.
- 4
Money is disclosed on every page
This site earns through affiliate links (Amazon Associates and the eBay Partner Network) and display ads. Rankings are never for sale, and no brand sees a page before it publishes.
- 5
Corrections get made, not buried
Wrong fitment note, dead listing, superseded part number: send it in and it gets fixed, with the page date updated so you can tell.
Recently under this byline
21 published pages carry it.
- Best GTI Floor Liners & All-Weather Mats: Carpet vs. Rubber & What Actually Fits
Carpet vs. all-weather floor liners for the VW GTI, why 'universal fit' and laser-measured are not the same claim, the two full-set all-weather mats currently in stock, and where to find OEM carpet mats and cargo liners by generation.
- GTI Carbon Buildup & Intake Valve Cleaning: Symptoms, Walnut Blasting & Catch Cans
Why direct-injected VW GTIs cake carbon onto the intake valves, how to tell it apart from bad coils or plugs, when to clean by generation, walnut blasting vs chemical cleaning vs manual scraping, the parts to have on hand, and whether a catch can actually helps.
- VW GTI Winter Tire & Wheel Setup Guide: Compounds, Second Sets, TPMS & Storage
Why a summer tire stops working below 7°C, how winter tires differ from all-seasons and all-weathers, whether a dedicated second wheel set pays for itself on a GTI, three-peak snowflake and speed ratings, TPMS on a second set, cold tire pressure, and how to swap and store the off-season set.
- VW GTI Wheel Spacer & Lug Bolt Guide: Bolt Pattern, Lengths, Seats & Hub Rings
The GTI's bolt pattern by generation, why the car uses lug bolts instead of studs, how to size bolt length to spacer thickness, ball vs. cone seats, hub-centric rings, conversion studs and torque — the fastener reference behind every GTI wheel swap.
- VW GTI Tire Size Guide: Every Generation, Plus Sizing & What the Numbers Mean
The complete VW GTI tire size reference — factory tire sizes for the Mk5, Mk6, Mk7, Mk7.5 and Mk8, how to read the sidewall, load index and speed rating decoded, safe plus and minus sizing with overall-diameter math, and winter sizing that clears the brakes.
- GTI Stage 1, Stage 2 & Stage 3 Explained: What Each Tune Actually Needs
A plain-English guide to VW GTI tuning stages — what Stage 1, Stage 2, and Stage 3 actually mean on the turbo EA888, the exact hardware each stage requires, fuel octane and DSG tunes, the build order that keeps the car reliable, and where the used/OEM parts live on eBay Motors.
- VW GTI Performance Package Explained: Bigger Brakes, the VAQ Diff & What Actually Changes
What the VW GTI Performance Package (PP) really includes — the 340mm front brakes, the VAQ electronic limited-slip differential (vs. XDS), the power bump, how to tell if your GTI has it, and why PP changes which brake and wheel parts you can buy.
- How to Choose an Intercooler for Your GTI: Heat Soak, Core Sizing & FMIC Upgrades
A plain-English guide to VW GTI intercooler upgrades — what heat soak actually costs you, how a front-mount (FMIC) fixes it, bar-and-plate vs tube-and-fin cores, why bigger isn't always better, direct-fit vs universal, fitment across Mk5–Mk8, and whether you need a tune.
- GTI Exhaust Systems Explained: Axle-Back vs. Cat-Back vs. Downpipe (Sound, Power & Drone)
A plain-English guide to VW GTI exhaust upgrades — what an axle-back, cat-back, downpipe, and turbo-back each actually change, where the sound comes from, how to avoid highway drone, materials and sizing, and which part makes power (spoiler: it's the downpipe, and it needs a tune).
- GTI Brake Rotors Explained: Blank vs. Slotted vs. Drilled (and Two-Piece)
A plain-English guide to VW GTI brake rotors — blank vs. slotted vs. cross-drilled vs. two-piece, factory rotor sizes by generation and package, why rotors 'warp' (they usually don't), and how to pick the right rotor for how you actually drive.
- GTI Brake Pad Types Explained: Street, Track & Endurance Compounds
A plain-English guide to VW GTI brake pad compounds — ceramic vs. semi-metallic vs. organic, street vs. track vs. endurance friction ratings, dust, noise, rotor wear, and how to match a pad to how you actually drive.
- Common GTI Problems by Generation — and the Parts That Fix Them
The known weak points of the Mk5, Mk6, Mk7/7.5 and Mk8 VW GTI — timing chain tensioners, water pumps, PCV valves, carbon buildup, diverter valves — and exactly which parts to buy to fix each one.
Get in touch
Corrections, something misclassified, or a listing that has gone dead: send it over. More on how the site is run and funded on the about page.