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I have a 91 mr2, gspecial. auto import. Standard wheels. Same tyre size on all 4... but I have some new wheels ready to put on, and the tyres at the back are wider. Is this right? How will this change handling? KT
"needing" less grip/rubber and the back is both heavier and is providing the drive so "needs" more grip. So the garage that is putting the same tyres on all 4 wheels is wrong! Wish there was a garage near Stoke on Trent that knows Mr2s. I read online that I should put 32 in the front and 34 in the back, but higher in winter... what do you think? Again, thanks... air I mean. I "think" it's around 30/33. It's something that's easy enough to play around until you are happy with it, so long as it's somewhere around that. The only time I can see it being of benifit is to lower the rears a few psi when/if it snows to give the tyre a slightly bigger footprint, and hence give you better traction. especially about lowering in winter. Car is like a roller skate then - lots of fun! I have driven worse (MGF - rubbish) on the ice. Many thanks . Son&heir has just said he will fit them for me next Saturday... so will save your mails for him! - bodywork/ new seats, respray... if you know anyone near Stoke who is trustworthy.. would like to hear. there will be some questions posted on the site when I start that! KT(on here) who is a mobile mechanic in the Manchester kind of area. Never used him personally but he certainly seems to come highly recommended You also generally want staggered alloys, meaning wider at the rear. The standard alloys are 6.5" front and 7" rear. Most people aim for 8" front and 9" rear, but 7" front and 8" rear is much more common. 205 tyres front and 225 rear is common and a great set up. 215/225 front and 245/255 rear is also great for larger, manlier wheels 
(225 at the front is pushing it though) You want LESS footprint not more! Overinflated your tyres marginally, or, swap out your wheels for a set with smaller tyres (winter wheels). 255s in the snow will be an absolute disaster. The little corsa across the road with 175s will cut into the snow much better. They key thing here is pressure on the snow giving you grip. Heavy car is good, wide point of contact bad. Haha on the 'manly' tyres... I sort of sneak up on people in the car - little blonde lady,,, ex rally/rallycross driver! My son will say 'o great' when I get this done! I take note on the winter tyres as well. I will be reducing the inflation come the bad weather. 
.. gives them a slight 'ballooning' and therefore gives you a smaller contact patch... there's a balance between the amount of rubber on the road and the pressure effecting on the contact patch. Less foot print = more PSI. 
blonde moment hehe. Get it now. Thanks to both. More not less!