Reply #10: "worth" doesn't matter directly

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since they don't actually ask that, but if he's very well off, then i'm sure he has a good income (including interest from investments), little debt other than mortgage (which is actually a plus), and most likely a clean credit history. you shouldn't have any problem with a co-signer like that.

again, though, you'll do even better if your brother-in-law just buys the car himself, and you work out a private deal with him to pay him back. the difference is that he can get a great interest rate, but you can't. if he's willing to do this, you can split the savings.

as for inquiries, usually 4 inquiries in 12 months is the limit before it starts to hurt your credit rating. there are some exceptions, though, for instance, any number of mortgage inquiries within a 2-week period counts as only 1 inquiry, as they assume you're just shopping around.