Join Date: Aug 2005
Location: Minneapolis, MN
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Budget alternative to 406-50 Big Apples
I ended up putting the CST Cyclops 20” x 1.95” on my Twenty. It looks like I could have gotten a 50mm Big Apple into the fork, though I might have needed a narrower rim. However I found my supplier doesn't carry the Big Apples in the 16" or 20" sizes. So my choice was paying retail for Apples or wholesale for a tire that retails for about $13.
The supposedly 53mm tire measures 48mm on the stock, very wide, rim. Clearance at the fork is only about 1mm. Fortunately the tire runs as true as if it had been turned on a lathe. It weighs 430 grams vs. 530 for the 50mm Big Apple. The tire seems to roll about as well as the Apples, but I haven't done any coast down comparisons with other riders yet.
I've been playing around with air pressures. So far I’m down to 35psi and it doesn’t feel any different than 65. I think I’ll get down to 25-30psi before rolling resistance starts to go up.