Uneven rear wheel tyre wear on Volkswagen Eos inside edge 25% is bald 4 mm of tread on rest of tyre

Hello Kiara,
For a car to have quality ride and handling characteristics, it needs to have a set of tyres that are in good conditions. Here are a few links that would let you know if your car's tyres need replacement, have a look
=> How to know if cars tyres need replacement
=> How to Know when Car Tires Need Replacing

It should be possible to gain a rough idea of the problem from the tyre wear.

Choppy scalloped type wear suggests defective shocks or excessive wheel imbalance.

Wear of both shoulders or edges of a tyre or the centre of the tread indicates incorrect tyre pressures.

If both tyres are displaying a similar wear pattern on the same inside or outside shoulder indicates incorrect toe setting.

If one tyre has a shoulder that is wearing it indicates an incorrect camber angle.

If both tyres are wearing differently the problem is likely to be a combination.

The rear alignment of some cars is adjustable and slight misalignment can be corrected but often rectification comes down to replacing parts or even using a body jack to move mounting points.

I suggest you book your car in for a 4-wheel alignment check.

take the car to a suspension specialist shop and have the rear wheels aligned first
have the suspension checked for worn mounts or bad springs
it is very important that the rear end is aligned before the front end
suspect that the suspension rubbers need replacing as it is over 6 years old
the tyre rotation is a myth perpetrated on drivers to sell tyres
when the tyre construction was cross-ply and not radials yes rotation then on cross-ply tyres could get the wear to even out but with radials once the wear is started then the tyre continually wears in that pattern regardless of which wheel it is on
even if you take that tyre of the car and put it on a trailer , it will still continue to wear in that pattern
tyres are no longer rotated but simply put front to back on the same side other wise the belts flex in a new direction in the tread and fail earlier that expected
besides that fact that tyre rotation will not allow you to monitor for suspension problems or wheel alignment problems and cost you 4 tyres at a time instead of two

I would have the 4 wheels alignment checked, if the rear is out it can be aligned by shims. any reputable alignment shop will know how to perform this. as far as the noisy tire goes it will need to be replaced to stop the noise. If the alignment is ok than the tire may have a broken belt internally which caused it to wear uneven

U have a wheel alignment problem, camber most likely, have a 4 wheel alignment done

Hello there:
The only possibility is that you need a camber adjustment. If that were the case, the tires would be wearing more on the inside edges. If they're not, either ease up on the gas a little bit, or just put $2 a week in a piggy bank for your next set of rear tires, and don't worry about it. the tires that come with this car are made of a relatively soft compound. The softer the rubber, the goo-ier the tires, and the more the car "sticks" to the road. That's one of the reasons you can drive down circular parking garage ramps at 65 mph in this car. The downside of softer tires is that they wear out faster. So it may be a combination of your driving and the type of tires you have.

under inflation is the first thing that come to my mind and lack of rotation and possibly shocks or struts that are shot. If your tires are worn down only in the center its usually overinflation.

If they are all terain or off road tyre's then it's normal if it has road tyre's then it would be best to get it checked wheel bearings and brakes.

REAR WHEEL ALIGNMENT
TOE-IN : 0±2 mm (0±0.08 in.)
1. The rear suspension lower arm mounting cam bolt should be turned an equal amount on both sides during adjustment. Right wheel : Clockwise direction : toe-in Left wheel : Clockwise direction : ton-out Maximum difference between LH and RH : 3mm 2. The cam bolt should be adjusted within a 90° range left or right from the center position. CAMBER Standard value : 0°±30´ Maximum difference between LH and RH : 3mm : 0±2 mm (0±0.08 in.) 1. The rear suspension upper arm mounting cam bolt should be turned an equal amount on both sides during adjustment. 2. Install the left and right springs which have the same identification color. 3. The cam bolt should be adjusted within a 90° range left and right from the center position. TIRE WEAR 1. Measure the tread depth of the tires. Tread depth of tire [Limit] : 1.6 mm (0.06 in.) 2. If the remaining tread depth is less than the limit, replace the tire. When the tread depth of the tire is reduced to 1.6 mm (0.06 in.) or less, the wear indicators will appear.