195 45 16 and 195 50 16 set up from personal experience

gromand

Member
When I bought my 1.6FSI it had 185 50 16.

It was fine in general, steering responsiveness was OK. Yet, on a motorway, when doing 80 miles the front of the car felt like becoming very light
and kind of losing connection/contact with the surface.
If I moved steering a bit the car started to move in a moment, not immediately.

So, I tried 195 45 16. I liked very much the responsiveness, the car was like glued to the surface and it felt as if it did not have the wheels
and was on the surface with all its bottom.
BUT, and really a very BIG BUT. If I drove on motorways I would have stayed with this set up of 195 45 16.
Driving in London, with the potholes and all possible uneven spots on the road - the whole car was permanently shaken with constant small shiver.
It was not about comfort to myself - it was about stopping the impact of this permanent shaking into wheel bearings and other mechanisms.
When a wheel hits a pothole, a tyre did not absorb the impact even for one iota - all the force of the impact went to a wheel bearing.
I reduced the tyre pressure but not much improvement, even if any.

So, I just changed the tyres for 195 50 16 and almost happy. If I had not lost the sense of responsiveness I would have been 100% happy.
The tyres are 195 50 16 Cinturato P1 84H, they are on a softer side as to my liking but I went from the recommended 29psi in front and 28psi
on rear to 35psi in front and 34psi in rear.
With 195 50 16 the car is lifted 1cm up in comparison with 195 45 16 which is also a better thing on uneven surface.
The fuel consumption did change for about 20 miles when the dial comes to a red part of a petrol meter. But, because each tyre is 1cm wider,
the braking distance is shorter so safety is better as well (you never know when you might urgently need that small yard of distance) - these 20 miles
are just neglected.
 
Thanks for sharing your experiences ...

About to change from our winter set up of 165/65 R15s to the summer standard configuration of 185/50 R16s ... but ideally need something a little more compliant ... the winter set up is sooo comfortable!

So 185/50 R16, 195/50 R16 or perhaps 185/55 R16?? Would tyre sidewall rigidity also have a significant impact?
 
I am considering doing exactly the same move, as I currently have the 195 45/16 with Hankook Ventus tyres - just nudging the tyre profile height up to a 50. Is it really that big a difference in responsiveness?

I really enjoy how the 45 is performing on (dry) roads, and didn't think this change would make such a difference. (The summer setup: http://www.flickr.com/photos/kjetilbmoe/8011943005/)
 
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