I've never had RS3s get greasy on me after 5 sets. I don't think RS3s do very well with heavy cars. Instead of getting greasy and falling off they just wear out super fast on an E9X M3. They'll last a long time on an E36 or E46. I got 6 weekends out of RS3s on my E46.
The Z2s seems like a slightly better Z1.
I've haven't seen a good review other than magazine reviews which don't really run the tire for more than 2-3 laps. Most people seem to complain about greasiness after 15 minutes. Magazines raved about the SS Z1s but never mentioned how they get greasy after 15 minutes.
I'd rather look at the Maxxic RC-1s before the Ventus TDs. I still run NT01s...a great budget tire that grips almost like an R-Comp but acts like a street tire.
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2018 F30 320iX Melbourne Red
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red
2000 E36/7 Z3 Steel Blue
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