My 4/4 sport has awfull standaars conti tyres size 165/80 r15. These tyres have very weak sidewalls, making fast driving not al that enjoyable. The question is, could these be changed in tyres size 185/65 R15?? Without trouble?
Paul
Avon CR6ZZ 175/75/15 would be my poison.
But I read "These tyres have very weak sidewalls, making fast driving not all that enjoyable." leads me to say your problem is (at speed)...
1/ Rear end feels like it moves from side to side
2/ You have to constantly correct steering to travel in a straight line
3/ Front end understeer in wet tight corners
You problem is not all tyres. I have had same problems and resolved above issues with these easy mods:
1/ Fit panhard rod to rear (Mulfab)
2/ Fit panhard rod to rear
3/ 1&1/2 * negative camber plates to Front end (Mulfab)
To enhance handeling to "down right pant wetting fun!"
4/ Front brake reaction stays (stops squirming under heavy braking) Mulfab
5/ Avon 175 as recommended
6/ Anti Tramp Bars to get the power down
7/ Avo shocks Mulfab
8/ Bump steer correction (swap the track rod end from above to below the steering arm) Mulfab.
9/ Heavy duty front spring (Mulfab)
Personally 1 to 4 a must for the sporting driver, do items 1-7 one thing at a time to feel the differences to the car and learn the meaning of what you are achieving.
6 only you know if you have axle tramp, 8-9 as things get old and saggy change at this point and through in the Hard chrome kingpins and new bushes.
All achievable at home
Have fun
Cain