I want to put some new, bigger tires on my Blazer, and don't want to lift it.

What is the largest size tire I can put on a '98 Blazer, with no modification to make it fit?

I want something that will give it a "mean" stance, if you know what I mean.

edit-
If it matters, its a 4 door, 4x4

 

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But seriously.... I think its 30.5 tall... and not too much wider, just use stock rims and you wont rub on the fenders....

 

Yes, I believe he is right I wouldn't try bigger than 30" but you could always take it down to your local tire shop and they should be able to tell ya for free.