Choosing between 18, 19 and 20 inch alloy wheels is the most common dilemma facing anyone upgrading their car's wheels. The right answer depends on your car, your priorities and what you use it for. Here is a practical breakdown to help you decide.
18 Inch Alloy Wheels
18 inch is the most popular upgrade size for everyday cars. It hits the sweet spot between visual improvement and practical usability.
Pros of 18 Inch
- Ride quality: The taller tyre sidewall (typically 40–45 profile) absorbs potholes and road imperfections better than larger diameters
- Cost: 18 inch tyres are significantly cheaper to replace than 19 or 20 inch
- Choice: The widest range of tyre brands and compounds is available in 18 inch sizes
- Weight: Lighter unsprung weight improves handling response compared to larger diameters
Best 18 Inch Wheels at OMI
Our 18x8 Audi TTRS Concave Style in Black Machined is one of our most popular 18 inch choices — it suits VW Golf, Audi A3/A4 and Mercedes A/C-Class on 5x112 fitment. Browse all 18 inch alloy wheels.
19 Inch Alloy Wheels
19 inch is the enthusiast's choice — the most popular size among drivers who want a visual upgrade without sacrificing too much ride quality.
Pros of 19 Inch
- Road presence: 19 inch fills the arch significantly better than 18, giving the car a more planted, purposeful stance
- Balance: On cars with standard or sport suspension, 35–38 profile tyres still provide reasonable comfort
- Versatility: Works on everything from hot hatches to executive saloons and SUVs
- Looks: The factory choice for most performance and S-Line/M-Sport trim levels
Best 19 Inch Wheels at OMI
Our 19x8.5 Audi TTRS Concave Style in silver or black machined is a clean, aggressive upgrade for A4/A5/Golf R owners. The 19x8.5 Black Machined version suits S3, Golf GTI and Mercedes C-Class Sport perfectly.
20 Inch Alloy Wheels
20 inch wheels are for drivers who prioritise looks and stance above everything else — or for SUVs where 20 inch is closer to factory fitment anyway.
Pros of 20 Inch
- Visual impact: Nothing fills an arch like a 20 inch wheel
- SUVs: On Range Rover, Audi Q5, Mercedes GLC and similar, 20 inch is factory fitment — it is the sensible choice, not an extreme one
- Stance: On a lowered car, 20 inch with a 30–35 profile tyre looks exceptional
Things to Consider with 20 Inch
- Tyre prices are significantly higher — budget accordingly
- Ride is stiffer, especially on sport or lowered suspension
- Potholes cause more tyre and wheel damage than on 18 or 19 inch
Best 20 Inch Wheels at OMI
Our 20x9/10 Porsche Style in Black Machined is a stunning staggered fitment option for 5x112 performance cars. For Range Rover owners, our 20x8.5 Range R Style is a factory-matched upgrade. Browse all 20 inch alloy wheels here.
The Quick Decision Guide
- Prioritise ride and tyre cost: Go 18 inch
- Best balance of looks and comfort: Go 19 inch
- Prioritise looks and driving an SUV: Go 20 inch
- Lowered performance car: 19 or 20 depending on arch clearance
Where to Buy
All OMI Wheels alloy wheels are flow formed and VIA/JWL certified. We ship from Northern Ireland — UK delivery 1–2 working days, EU delivery 2–5 days with no import duties. Shop all sizes and fitments here.