I changed to Jaguar XJS wheels on my 410.  Very similar look to the 410 wheels and I think 1" wider.  They needed a very light application of an angle grinder to the corner of the inner cup to avoid contact with the calliper. 
I fitted 205/70 15 tyres. 
 
Ultimate ability to stay on the road might have been better but I wasn't happy with the feel of the steering.  Went back to standard Bristol wheels with 185/15 on the front and kept wider on the back.  I think this is the best option for handling but not everybody's choice to have different front and rear. 
		
		
		
		
		
		
		
	
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