I have a 2004 IS200 Limited Edition with standard 215/45/17 tyres, can i change these to 225/45/17 or even 225/40/17 ,as i can get a really good deal on the other 2 sizes,cheers.

wouldn't worry me to make such small changes , ,barely noticeable , check here if you are worried
[url="http://www.lexusownersclub.co.uk/forum/index.php?showtopic=76009&hl=&fromsearch=1"]http://www.lexusownersclub.co.uk/forum/index.php?showtopic=76009&hl=&fromsearch=1[/url]

i have2 new 215/40/17 on the front and needed two rears (below limt marker and very slippery on corners) and got two yokohamas for free but were 205/40/17 and are fine but the speedo is a little out but the grip is fantastic

would always put the narrower tyres on front with wider on rear ,typical 911 / bmw performance set up
other way round not right

.

the tread pattern is aggressive and would not be good for steering hence on the rear


[url="http://www.ebay.co.uk/itm/205-40-17-YOKOHAMA-PARADA-2054017-205-40-17-205-40W17-/400147332208?pt=UK_Cars_Tyres_RL&hash=item5d2aa3bc70"][img]http://thumbs2.ebaystatic.com/m/mjqTmtvHjxBIBSRys4efUFA/140.jpg[/img][/url]

never heard of tyres being designed for front or rear ? think they would work on front just as any others ?

they would work on front or rear never heard such poop...free or not i would never run thinner tyres than what were on the car as standard....wider yes...
infact in 16 years of working in the trade ive never heard such a thing...in fact ive taken a screen shot for the boys at work just for giggles

4 Pirelli 225/45/17 on there way,will see how they work.

I run 255/40/17s rear, 235/45/17s fronts all on 8j rims. I do have 2 new 235/45/17s in the garage so will put these on the rears when the existing ones are worn out.

[quote name='ian 2 ski' timestamp='1328045711' post='772424']
4 Pirelli 225/45/17 on there way,will see how they work.
[/quote]

sure they,l be fine , ,personally would have gone narrower on fronts , this avoids tramlining