I've noticed a considerable difference in stability, cornering, and crosswind performance when increasing tire pressure to 50 psi. Just one other factor to consider. Karl Wolz ----- Original Message ----- From: Fitz-Randolph, Douglas <dfrandolph@TALKAM.NET> To: <vanagon@GERRY.VANAGON.COM> Sent: Wednesday, September 08, 1999 11:07 AM Subject: Re: Disappointed with Yokohama Y370 Tires
> I'm no expert here, but I've formulated a crosswind theory based on my > personal > observations of the following tires: > > Nokian Hakkapelitta 10 184R14 D > Michelin LTX 195/75R14 C > Uniroyal Laredo 195/75R14 C > Michelin MXT 205/70R14 R > > The worst crosswind performance was observed with the 185's - constant > corrections required on windy days. The two 195's performed comparably, and > were a marked improvement over the 185's, yet the little causeway into > Portland still wasn't pleasant on a windy day. The 205 - my current tire - > has virtually eliminated the effects of crosswinds. > > Since your previous tire - a Pirelli 6000 non-reinforced 205 mm passenger > tire - offered better crosswind performance than the 195 mm Yokohamas, > one would conclude that sidewall reinforcement was not a contributing > factor. > The variables in your crosswind equation would be tread design and tread > width, as these seem to be the major differences between the tires you > are comparing. > > Combining our observations - since I did not see any noticeable difference > in crosswind performance between the two 195 mm tires - both with > significantly different tread patterns - it would seem that the only > remaining factor influencing crosswind performance would be tread width. > > Of course wider tires have their drawbacks in other conditions, but it > would seem that for dry pavement crosswinds wider would be better. > > Differing opinions are of course welcome... > > Doug Fitz-Randolph > Yarmouth, ME > '90 Syncro > |
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