Quote:
Originally Posted by arpad_m
Try some quality non-runflat tires and you'll be surprised how much of this is due to the tires (I'd say 100%, but then I might be partial towards my Michelin PS4S set). I had those 18" wheels with the stock all season GY tires on my previous V6 and they didn't feel more agile at all than my stock 20" wheels on the SS.
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Thank you very much for replying arpad_m..
I suspected the runflats were hurting the ride but I know from trying many cars over the years that 18s and 19s always felt like a quieter, more agile, and better quality(less vibration) ride than stiffer low profile 20 inch setups. It must be the feel of a wider sidewall that I prefer. I tried a Cayman at the dealer with 20s then tried one with the same tire model on a 19 inch rim and the 20s were too much road punishment for me. I liked the 19s much more. I suspect I would like a Cayman on 18s even more but never tried one.
The recent test drive on the R18 GoodYear Eagle Sports made quite an impression on me so I looked online to see if I could get them in 20s but they don't come in 245/40R20. Closest size is 245/35R20. They would fit but it would throw off my speedometer because of the 26.8" diameter vs 27.7". Also, the even smaller side wall of the 245/35 might make the ride harsher still even though I switched to smoother tires like the Eagle sport.
Changing tires is a very expensive deal so it's hard to know what to do and not risk blowing $1,000+ and not getting the effect you are after. I'd be very happy with the R18 GoodYear Eagle Sport ride. My question is whether that ride is possible with a 20" rim. For me it's more than just being agile. It's the absolute quietness, less feeling of tire drag, less vibration from the road, less jarring on the bumps. Steering with my current 20s feels heavy compared to the quick steering 18s I recently tried out.
I got the 20s because they look way better. But now looks matter less than the ride for me. Comments welcome. Save me from making a costly mistake.