Any thoughts on this? I seem to notice a little more tramlining and/or sensitivity to crosswinds on the highway after a 7mm front and 15mm rear wheel spacer install.
More leverage on the suspension. Move the tire out is like getting a larger breaker bar. One typically doesn't get a smaller ratchet when a 3/8ths isn't enough to break a bolt loose.No, if anything by widening your track you are shifting the tire/wheel weight outside. Not sure why you think its the opposite when you widen. Please explain the physics behind your thoughts.
Look at your basic geometry; shifting it out in a straight line (180 degrees) will not change the angle. The angle can change via force based on weight - loading. But that isn't a factor here unless you consider fractions of an ounce as being pertinent which can be affected by an additional passenger, luggage, gas in the tank, alignment without you in the car, etc, etc. If you do that, and believe all those comments from unnamed others you read, than I will back out.More leverage on the suspension. Move the tire out is like getting a larger breaker bar. One typically doesn't get a smaller ratchet when a 3/8ths isn't enough to break a bolt loose.
I too have seen more than one person say to get an alignment after adding anything bigger than 5mm spacers. I questioned why but at 20mm a side, the geometry is slightly more askew than from the factory. Not so much that you'd see horrible wear after 100 miles but it might wear the tires just a tad faster. It might also make the suspension just a tab softer. I doubt it has any real effect at less than 10/10.
Please read my post to az erik about weight. You seem to be focusing on one thing and are ignoring all else - some which will have more of an effect than spacers.Amdeutsch,
I agree, shifting the wheels out with a spacer in a straight line (180 degrees), will not change the angle, but these cars have a negative camber, particularly in the rear. The increased leverage on the suspension may cause even more of the car's weight to bear on the inside of the tires, and result in increased sensitivity to tram-lining and darting when crossing road crests.