Max CC immunity?

- Masterys Tenacious +swiftness
it reduces stuns ect by 50% (Tenacious 15% +
35%)
and slows by 85% (BoS 25%+ Tenacious 15% +
35% + Swiftness 10%)
Anyway to get higher than this combo or is this Max?

it reduces stuns ect by 50% (Tenacious 15% +
35%)
and slows by 85% (BoS 25%+ Tenacious 15% +
35% + Swiftness 10%)
Anyway to get higher than this combo or is this Max?
Doesn't Olaf get 100% CC resist with ult? I don't play him, so I'm not 100% sure.
Sorry lad, but these reductions are multiplicative.
Maximum CC reduction you can get is (as Irelia): 40% from passive, 35% from tenacity and 15% from tenacious, and you end up with 66,85% CC reduction.
Maximum slow resistance is 100%, Yi ult.
gangplank has 100% cc immunity with the power of vitamin C 
If we are going by champ abilitys dont forget Evelynn on slows can jump right out
doesn't reduce the duration of slows. Neither does mastery swiftness. Those two reduce the effect of slow. Example:
You are slowed by 50% for 3 seconds.
With boots of swiftness you are slowed by 37,5% for 3 seconds.
With Mercury Threads/Zephyr you are slowed by 50% for 1,95 seconds.
Also, both tenacity and slow reduction stacks multiplicatively, so if you have the Swiftness Mastery (-10% slow effect) and Boots of Swiftness (-25% slow effect) you have a total of 32,5% slow effect reduction.
The highest Tenacity I believe is Irelia with 35 Tenacity from items, 15 Tenacity from masteries and 40 tenacity from her passive (with 3 or more enemies around here). This pretty much mean she have 66,85 tenacity, so the 3 seconds slow would only last 0,99s on her.
Fiora I think it is? Has Tenacity in her passive, allowing her to have more CC resistance than any other champion who doesn't have it in their passive, so using her would increase your numbers.
Also play Irelia. You get 40% reduction on crowd control with 3+ enemies around.