Plus-Sizing Guide

Move up a wheel size without breaking your speedometer, ride or fuel economy. See the closest matching Plus 1, Plus 2 and Plus 3 fitments for any tire size.

Plus sizing keeps the overall tire diameter constant while moving to a larger wheel rim. The sidewall gets shorter, the tire footprint widens, steering response sharpens — and ride comfort, fuel economy and pothole resistance all degrade in proportion.

Done right, the speedometer reads correctly, the ABS/TCS calibration stays valid, and the speedo error stays under ±2%. Done wrong, you ruin the ride and confuse the vehicle's electronics.

What is plus sizing?

  • PLUS 0

    Replacement

    Same size as the OEM placard. Same wheel diameter, same overall tire diameter.

    Match the original tire-size placard exactly — width, aspect ratio and rim diameter. Same revolutions per kilometre, same speedo reading.

  • PLUS 1

    +1 inch wheel

    One-inch larger wheel, shorter sidewall, slightly wider tread. The most common sport upgrade — minimal speedo impact.

    Rim +1", width typically +10 mm, aspect typically −10. Diameter target: within ±1.5% of OEM.

  • PLUS 2

    +2 inch wheel

    Two-inch larger wheel for a noticeably more aggressive look. Ride comfort and pothole tolerance degrade visibly.

    Rim +2", width +20 mm, aspect ratio drops accordingly. Diameter delta should still stay within ±2%.

  • PLUS 3

    +3 inch wheel

    Three-inch larger wheel, very low-profile sidewall. Show-car territory — verify daily-driver tolerance for ride harshness.

    Rim +3", very low aspect ratios (35–40 series). Often requires fender clearance work and confirms suspension travel.

Plus-size calculator

Enter your current size and we'll generate the closest matching Plus 1, 2 and 3 fitments.

Examples

Watch out for

⚠

Speedo & ABS error

Larger overall diameter slows the speedometer reading. ABS and traction control rely on accurate wheel speed — a >3% diameter delta can trigger fault codes on some vehicles.

⛓

Wheel-well clearance

Wider tires and shorter sidewalls reduce clearance to fenders, struts and inner liners. Always test full lock and full bump before driving.

≈

Ride comfort & rim damage

A shorter sidewall absorbs less impact. Pothole hits transfer to the rim and suspension — check tire-load rating and budget for occasional bent rims.

⛽

Fuel economy

Wider, lower-profile tires roll less efficiently and increase rolling resistance. Expect a measurable hit to fuel economy at highway speeds.

❄

Winter tire availability

Plus-sized winter tires are often unavailable in larger rims, or only at premium prices. Many drivers run smaller winter setups for cost and chain clearance.

🛞

Load index & speed rating

The new tire's load index must equal or exceed the OEM rating, and the speed rating must equal or exceed it. A Plus-sized tire with a lower load index is a safety violation, even if dimensions and clearance check out. Verify both markings before installing.

Plus-size suggestions are starting points. Always verify clearance against fenders, suspension and brakes — especially with wider tires and lower-profile sidewalls. Cross-check against the manufacturer's tire-size placard before installing.