Tyre-related problems with the Audi Q8 often arise from a combination of insufficient tread, incorrect tyre pressure and uneven wear. The weight of the car and the large wheel sizes make careful checks of the tyres and suspension even more important. Anyone who also wants to recognise other issues can find an overview of problems with the Audi Q8. The inner edge of the tread in particular deserves attention: a tyre can already be badly worn there while still looking fine from the outside.
Why do tyres on the Audi Q8 wear out quickly?
The Audi Q8 puts its tyres under considerable strain. Vehicle weight, wide tyres and available engine torque all play a part. Sporty acceleration, lots of cornering, heavy loads and towing a trailer can accelerate wear further. The same applies to the SQ8 and RS Q8, where the tyres also have to meet higher performance demands.
Rapid wear is not always even wear. If the tread disappears mainly from the inside edge of a tyre, the wheel alignment may be out. With incorrect tracking, the wheels do not point quite in the right direction while driving. Free play in a control arm or steering component can also affect the wear pattern. So have not only the tyre replaced, but also the cause investigated.
Use the wear pattern as a first clue:
- Wear on both shoulders may indicate underinflation.
- Wear in the centre suggests the tyre has been overinflated for a long time.
- Heavy wear on one shoulder calls for a check of the alignment and suspension.
- A scalloped tread can point to sawtooth wear; in that case, also check the dampers and wheel balance.
These are clues, not a diagnosis. Measure the tread depth at several points across the width of each tyre. Also look for differences between the left and right sides. According to the Dutch central government, the legal minimum tread depth for car tyres is 1.6 millimetres. If wear is clearly uneven, do not wait until that limit has been reached.
Solving Audi Q8 tyre pressure problems
The correct tyre pressure for an Audi Q8 depends on the trim level, tyre size and load. Use the values on the vehicle sticker or in your car’s handbook. There may be separate values for normal use and heavy loading. The pressure on the tyre sidewall is the tyre’s maximum pressure, but not necessarily the specified pressure for the Q8.
With too little pressure, the tyre deforms more and builds up more heat. It can also wear more quickly at the shoulders. Too much pressure can put more strain on the centre of the tread and reduce ride comfort. According to Audi’s vehicle instructions, after adjusting the tyre pressure you must save it again in the tyre pressure monitoring system, following the procedure for your version.
Here is how to deal with a warning or suspected pressure loss:
- Stop in a safe place and check the tyres for visible damage.
- As soon as possible, measure the pressure in all four tyres with a reliable gauge.
- When the tyres are cold, set the pressure to the value Audi specifies for your load.
- Save the adjusted values via the vehicle system, as described in the handbook.
- If the warning returns, have the tyre, valve and rim flange checked for leaks, among other things.
A tyre can look normal and still lose pressure. If one tyre keeps dropping behind the other three, do not keep inflating it without finding the leak. Do not continue driving if the tyre is visibly damaged or deflating rapidly.
Insufficient tread is not always visible straight away
On the Q8, wear on the inside of a tyre can sometimes stay out of sight for a long time. The bodywork shields that area. A quick look along the outside of the car therefore does not give the full picture. When changing tyres, check the inside of all four tyres and record the tread depth at different points. That makes it clear whether wear is increasing or confined to one wheel.
Also gently feel the tread. If the tread feels smooth in one direction and scalloped in the other, there may be sawtooth wear. This can cause a humming noise that resembles a wheel bearing fault. A tyre specialist can measure the tyre and at the same time check whether alignment, wheel balance or suspension needs attention.
Best tyre choice for Audi Q8 reliability
When choosing tyres for an Audi Q8, start with the car’s specifications, not the brand. Check the approved size, load index and speed rating for your version. The load index shows how much weight a tyre may carry. For an SQ8 or RS Q8, tyres should not be chosen solely on the basis of the same rim diameter: load and speed must also be correct.
When buying and fitting, pay attention to these points:
- Choose a tyre size that is approved for your Q8 version.
- Check that the load index and speed rating meet the vehicle requirements.
- Use a reinforced version if Audi specifies one for that size.
- Compare the remaining tread on tyres that will stay on the car together.
- Choose a seasonal tyre that suits your use. Also check wet-weather performance.
With quattro, it is sensible to avoid large differences in size and wear between the wheels. If you are replacing only one or two tyres, discuss the combination on your car with a tyre specialist. A suitable new tyre is not automatically a good match for three tyres that are already heavily worn.
‘ Fitting only a new tyre does not solve a changed wheel angle. ’
Large wheels require inspection after an impact
Many Q8 versions run on large wheels with a relatively low tyre sidewall. As a result, there is less rubber between the wheel and the road when you hit a pothole or kerb. After a hard impact, check for cuts, a bulge in the sidewall and damage to the rim edge. A bulge may indicate internal carcass damage; in that case, have the tyre assessed immediately and do not continue driving on it.
If the steering wheel is crooked after such an impact, the car pulls to one side or new wear appears on one shoulder, have both the wheel alignment and the suspension components checked. Fitting only a new tyre does not solve a changed wheel angle.
Model year determines the specification, not the defect risk
Tyre sizes and specifications can differ by model year and version. So always use the details for the specific car, rather than a general pressure chart for ‘the Audi Q8’. The available information contains no figures showing that any particular model year has a higher risk of tyre defects. The condition of the tyres, the pressure and the wheel geometry give more useful guidance for an individual Q8.
Check the pressure monthly and inspect the tread, including the inside edge. If wear is uneven, record the measured values and investigate the cause before fitting new tyres. On the Carnews website you will find much more about Audi Q8 problems, maintenance and other automotive technical topics. Discover which information helps you keep your car in good condition.
Frequently asked questions
Quattro distributes the driving forces across four tyres, so acceleration wear is usually spread more evenly than with two-wheel drive. However, with hard acceleration and aggressive cornering, all four tyres wear faster, especially at the shoulders; alignment or pressure differences make this pattern worse. Large differences in tread depth and rolling circumference should be avoided, as they put extra strain on the quattro drivetrain.
There is no universal optimum tyre pressure for both track use and long motorway journeys with the Q8. For motorway journeys, use the cold tyre pressure shown on the sticker in the door pillar, matched to tyre size and load. For track use, the pressure must be adjusted separately to the tyre type and hot tyre temperature, preferably according to Audi’s or the tyre manufacturer’s guidelines. Never use the maximum pressure on the tyre sidewall as the recommended value.
The choice does not directly change the air suspension’s control, but it does affect the perceived response. Summer tyres generally feel tighter and more immediate, while all-season tyres often give a little more and offer more comfort. Tyre pressure, sidewall stiffness and tyre size are more important here than the tyre label alone.
