Quick tyre question need answer asap

[Bigbear]

Evening all, I need to replace the tyres on my bus due to them being perished, I'm going to be using Mr whitewall as I'd rather part worn tyres than new, my current tyres are 195/75/14, my question is , what size tyres can I get away with if these are not available? My bus is slightly lowered but not slammed.

Cheers.

 

[Bigbear]

Would I get away with 185/70/14?

 

[009]

More info here for you to work out best sizes etc
http://www.blackcircles.com/general/tyre-size-calculator" onclick="window.open(this.href);return false;
Cheers,
DON