All tires were white or cream colored as they hadn't figured out that adding carbon black added great strength and wear properties to rubber yet. thus most tires are black to this day. Natural rubber is a Carmel color and zinc oxide was a cheap pigment. The cream tires look cool for vintage / retro look.why on everything in the early 1900's ?
easier to build or just just cool and popular ?
i love the look, just put a pair on my schwinn.
I spent 34 years working for Michelin. All your information here is spot on.I spent a little time in the Michelin rubber plantations in Vietnam. The sap of the rubber tree is white or a crème white depending on who you talk to.
Never thought Id learn anything new about rubber on this forum. If you think about it its a very important topic that is seldom brought up. Our life's all depend on the strength and durability of rubber nearly everyday when we hop on a MB, motorcycle or in the car. What are your thoughts sbest on recommended bike tires, pressure, brands, types, tube types, tubeless? Sorry for such a giant open question/ maybe should be a new sticky thread.Zinc or Titanium Oxide (used to make white tires) are both good UV blocking agents. Ozone is more of a problem than UV. Modern tires use a neoprene covering on the sidewalls to protect against ozone cracking. Carbon Black gave the most wear resistance until silica came around.
ever work on the goer tires ? i saw and drove my 1st one around 1975 in Germany. it used the tires for suspension, they were huge, my guess 7ft tall !! the cab could pivot in place independent of the trailer section. they bounced like crazy and the later ones had a suspension fittet to the driver's seat.I'm sorry, I was an expert on the machinery needed to construct truck, earthmover and military tires. I don't know much about bicycle tires.