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329 Posts
One for the suspension experts 
I think my car's always done this since I've got it. But I'm starting to notice it more.
I'm going quick-ish around a tight roundabout or a 90 degree bend in town and as the steering starts to come back to center the back end of the car does a little skip and I see a flash of ABS. Nothing where you would expect the backend to go at all, and it feels fine on the open road but this little skip feels wrong.
Everything on the rear is as far as I can tell standard apart from the tyre size and offset (See below), the previous owner swapped the wheels for a set off a 440i. The overall outer diameter of the tyres is about 33mm bigger than the stock. and some other differences offset etc:
I'm suspecting it's either somthing to do with that, or there's a failed bushing or shock or somthing. Or could it just need an alignment perhaps?
Any thoughts?
The difference in the stock and current tyre settup:
I think my car's always done this since I've got it. But I'm starting to notice it more.
I'm going quick-ish around a tight roundabout or a 90 degree bend in town and as the steering starts to come back to center the back end of the car does a little skip and I see a flash of ABS. Nothing where you would expect the backend to go at all, and it feels fine on the open road but this little skip feels wrong.
Everything on the rear is as far as I can tell standard apart from the tyre size and offset (See below), the previous owner swapped the wheels for a set off a 440i. The overall outer diameter of the tyres is about 33mm bigger than the stock. and some other differences offset etc:
I'm suspecting it's either somthing to do with that, or there's a failed bushing or shock or somthing. Or could it just need an alignment perhaps?
Any thoughts?
The difference in the stock and current tyre settup:
| Front Stock | Front Current | Difference from Stock | |
| Width mm | 215.00 | 225.00 | 10.00 |
| Profile % | 40.00 | 40.00 | 0.00 |
| Rim Diameter In | 18.00 | 19.00 | 1.00 |
| Rim Width In | 7.50 | 8.00 | 0.50 |
| Rim Offset (mm) | 49.00 | 36.00 | -13.00 |
| Spacer (mm) | 0.00 | 0.00 | 0.00 |
| Total Offset (mm) | 49.00 | 36.00 | -13.00 |
| Profile (mm) | 86.00 | 90.00 | 4.00 |
| Diameter (mm) | 629.20 | 662.60 | 33.40 |
| Radius (mm) | 314.60 | 331.30 | 16.70 |
| Circumference (mm) | 1976.69 | 2081.62 | 104.93 |
| Rim Poke (mm) | 46.25 | 65.60 | 19.35 |
| Inset (mm) | 144.25 | 137.60 | -6.65 |
| Track (mm) | 1470.00 | 1496.00 | 26.00 |
| Rear Stock | Rear Current | Difference from Stock | |
| Width mm | 245.00 | 255.00 | 10.00 |
| Profile % | 35.00 | 35.00 | 0.00 |
| Rim Diameter In | 18.00 | 19.00 | 1.00 |
| Rim Width In | 8.50 | 8.50 | 0.00 |
| Rim Offset (mm) | 52.00 | 47.00 | -5.00 |
| Spacer (mm) | 0.00 | 0.00 | 0.00 |
| Total Offset (mm) | 52.00 | 47.00 | -5.00 |
| Profile (mm) | 85.75 | 89.25 | 3.50 |
| Diameter (mm) | 628.70 | 661.10 | 32.40 |
| Radius (mm) | 314.35 | 330.55 | 16.20 |
| Circumference (mm) | 1975.12 | 2076.91 | 101.79 |
| Rim Poke (mm) | 55.95 | 60.95 | 5.00 |
| Inset (mm) | 159.95 | 154.95 | -5.00 |
| Track (mm) | 1497.00 | 1507.00 | 10.00 |
