Student or Learner
today i watched a show and there's sth i couldn't understand,here i'll expalin the context:
a woman comes to dinner with her bf and she expected that he would purpose,but instead he broke up with her.and then when she calmed down ,she went to her bf's(maybe wanted a talk)but found a bag of lady's underwears(her bf had seen someone,obviously)so she said "i won't let your tyres down"and left.her face looked quite disappointed
waiting for ur answer,thank!!
In case you are still not clear on "let down" in this context, it means to allow the air to escape. To deflate the tyres.