Jamo, I still have my Yoko's (245's and 275's), but I found this thread interesting when Tom Kirkham mentioned going slightly smaller:
"On the street a narrower tire will feel better. This is especially true in the front. A wider tire for a given rim width takes longer to take a set than a narrow tire. I do not like 295 tires. Lets face it on the street maximum G's is something rarely if ever attained. If you are looking for maximum G's on the street you will not have your license or freedom very long. On the street you are looking for balance and feel. The feel of the car is something you can enjoy every moment you are driving the car. On my Sebring car I put 225 (6.5 in rim) and 245 (8.5 in rim). These are also the tires I put on the 427 car we ran at Bonneville. Driving this 427 car on the street felt awesome. Something to think about is most of our cars have close to a 50/50 weight distribution. This has a direct correlation to the tire size...
Here is an interesting article on the subject.
http://www.modified.com/projectcars/...t_2/index.html
__________________
Thomas L. Kirkham, Jr.,
Vice President
Kirkham Motorsports
www.KirkhamMotorsports.com"
http://clubcobra.com/forums/showthread.php?t=100520
So, 245's and 295's would be the conventional wisdom, but a narrower tire on both front and rear might make sense too.