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Discussion Starter · #1 ·
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:
Front StockFront CurrentDifference 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 StockRear CurrentDifference 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​
 

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Discussion Starter · #3 ·
It's a 125i,, I don't know if they came with the e-diff. But yes i think it could feel like the inside braking.
I'd have swapped the tyres a long time ago but it came with brand-new p-Zero's on it :)
 

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Discussion Starter · #5 ·
they are!
Better than others I've tried. they don't seem to follow lines in the road like the Mitchelin's I had on the old 1'er and the 4 series.
I know the sidewalk flex feel you get on run-flats but this is more of a traction loss skip.
 
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