ok, i know not everyone agrees with me BUT...
i used 275/40's on the rear wheels of my 97 GT AND 99 GT (same 17" wheel size as Bullitt) and loved every minute of them and never had a problem. they handled fantastic in the dry. in wet and especially snow, you get more tendency for hydroplaning or "plowing" with a wider 275/40 tire .....common sense.
it has been noted at this site that using 275/40's on stock rims tends to "push the sidewall out" from the wheel just a little more than stock. but if you buy a top of the line tire, i still believe your dry performance improves.
i got Dunlop Sport SP5000's from Tire Rack on my 99 GT and they are the best high performance all weather tire i've owned so far. check out tire rack's website and play with all the tire and size combinations
http://www.tirerack.com
(no, i don't work there)
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mystang99 - (Marty)
2001 Bullitt DHG #648
Ford Racing Alum. Driveshaft
Steeda Tri-Ax Shifter, K & N Filter,
MGW LTD-All custom Satin Bullitt Bits & Pieces
<font size=-1>[ This Message was edited by: mystang99 on 2001-10-29 16:05 ]</font>