2020 Audi TT RS Wheel Interchange

2020 Audi TT RS Wheel Fitment Guide

1. Baseline

Let’s anchor the known OEM specs for your 2020 TT RS. These are the values I treat as the safe reference before any swap or upgrade.

Some details can vary by region or package. If anything on your car looks different, verify against your owner’s manual and on-vehicle markings. The calculator on wheelinterchange.com lets you compare a donor setup to your TT RS. Use it to visualize width, offset, and diameter changes before you buy.

2. Edge cases

Here are the problem spots I see most often on this platform. Plan for them early.

• Front brake clearance. TT RS calipers are large. Some 18 inch wheels may not clear. Even some 19s with certain barrel shapes can touch.
• Inner strut and spring perch clearance. Low offset pushes outward. High offset can rub inside under load.
• Fender and liner contact. Wider tires or low offset can hit the fender lip on compression or at steering lock.
• Center bore mismatch. Wheels larger than 57.1 mm need hub-centric rings. Smaller bores will not seat.
• Lug seat type. Audi OEM wheels typically use a ball seat. Many aftermarket wheels use a cone seat. Mixing seats can loosen fasteners.
• Spacer use. Spacers change effective offset and thread engagement. Bolts may need to be longer, and spacers should be hub-centric.
• TPMS. Audi has used both direct and indirect systems across years. Sensor needs can change with wheel swaps.
• Speedometer and ABS tolerance. Large tire diameter changes can affect calibration and assist systems.

3. Detection

Not sure your planned setup will fit? Here’s how I check before and after mounting.

• Use the calculator to compare donor vs installed. Watch inner clearance and poke changes in millimeters.
• Measure your current inner gap. A straightedge against the wheel face and a ruler to the strut gives a baseline.
• Mock-up for brake clearance. Test-fit with no tire, or use a caliper template if the wheel maker provides one.
• Check hub fit. The wheel should seat fully on the 57.1 mm hub with no wobble.
• Confirm fastener engagement. Bolts should thread deeply and smoothly. No cross-thread feel.
• Road test for vibration. If you get shake above 60 mph, re-check hub-centric rings and balance.
• Steering lock check. Turn lock-to-lock on level ground. Listen and feel for liner or arm contact.
• Speed error spot-check. Compare GPS speed to dash after a tire size change.

4. Mitigations

When a change introduces risk, these steps usually stabilize the result.

• For small inner rub risks, add a quality hub-centric spacer and proper extended bolts. Recalculate effective offset in the tool.
• For hub mismatch, use 57.1 mm hub-centric rings. Aluminum or good poly both work when sized correctly.
• Match bolt seat type to the wheel. Do not mix ball-seat bolts with cone-seat wheels.
• Keep overall tire diameter close to OEM. Many techs aim within about 2 percent to limit calibration impacts.
• Balance and road-force check new assemblies. It can cure subtle high-speed shakes.
• Re-torque after a short mileage break-in. Heat cycles and seating can loosen hardware.
• If downsizing diameter, confirm barrel-to-caliper clearance with a physical test fit before mounting tires.
• If anything feels off, revert to OEM specs in the calculator and work outward in small steps.

Helpful tools:

• 1/2 inch torque wrench
• Digital caliper for bore and spacer checks
• Wheel hanger pin M14x1.5
• 57.1 mm hub-centric rings

5. Safe defaults

When in doubt, keep it simple and conservative.

• Stay with the OEM baseline: 19 x 9.0 ET52 on 245/35R19.
• Use wheels with a 57.1 mm center bore or proper rings.
• Use M14 x 1.5 bolts with the correct seat for your wheel.
• Avoid large offset swings. Small changes are easier to manage.
• Downsizing for winter may be possible. On the TT RS, always verify caliper clearance first.
• If you are unsure on torque, follow the owner’s manual spec.

6. Checklist

Before you buy or install, run this list top to bottom.

• Confirm your car’s VIN specs and compare to the table above.
• Note the donor wheel’s size and offset from its barrel markings.
• Open the wheelinterchange.com calculator. Set the donor on the left and your 2020 TT RS on the right.
• Enter custom wheel width, diameter, and offset. Watch inner clearance and poke changes.
• Enter custom tire section width and aspect ratio. Check overall diameter change.
• If using spacers, add their thickness to offset math in the tool.
• Verify center bore is 57.1 mm or plan hub-centric rings.
• Match bolt seat type and ensure adequate thread engagement.
• Test-fit one corner, spin by hand, and check for caliper or liner contact.
• Mount, balance, torque per OEM, then re-torque after a short drive.

You do not have to guess. Work from the OEM baseline, test changes in the calculator, and confirm with simple measurements. That approach keeps risk low and results consistent.