Quote:
Originally Posted by Price
...I'd be cautious riding 40..35 profile tires with soft sidewall on pothole ridden roads.
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Quote:
Originally Posted by Price
...a run-flat have much stiffer sidewall (for obvious reasons) and I imagine it takes much, much greater force to squish it enough for an obstacle to reach the edge of the rim than with a regular tire.
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It's the opposite; a softer sidewall will absorb some of the impact, whereas the stiffer RFT sidewall transmits it to the wheel. Read the Car and Driver long-term test on the new 5-series - they bent something like 6 wheels over 40k miles.
To the OP - I replaced the 20" RFT for Toyo Proxes, primarily for occasional driving in snow. The ride is significantly improved. They are not 'performance' tires, however, so some grip is sacrificed. The softer sidewall effectively reduces the spring rate, so there is a bit more body roll and turn-in is less crisp, however I find the increase in compliance provides better handling overall on anything less than freshly paved roads (of which there are few around here). Lighter low-speed steering is a bonus, as is longer tread life.