Do any car alarms detect your car being cut into?

 

One with a properly tuned proximity sensor would...

 

my proximity sensor detects when someone gets close, it would go off if they started to cut the top

 

You could run a thin wire all around the top and set it up so that if the wire is cut/split the alarm goes off...

Proximity sensors would be better.

 

Yes, and make sure you have some lead to reinforce it. Also install a GPS chip so if they (use a method I am not allowed to mention) completely jam and disable your alarm, you have a method of knowing your car has been moved.

Lead is the only proven method to truly deter a thief from comming back.

 

which car alarm do you guys recommend?

 

I like the Viper 5901, but the install is EVERYTHING!! Even though it will only but you enough time to give the sob thief some lead or a nice ass beating. It will NOT prevent the car from being stolen.

 

I have an Avital on mine with a proximity sensor and the guy has it tuned pretty good that it doesnt go off with heavy rain and thunder but when i went to show Honda my roof i showed them an area on the outside of the roof which i put pressure on with my nail and it went off