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However I am still struggling to find out if a 45 profile tyre will work or not on an mr2.dazzz wrote:I'm no expert but
Also wont be going too low on the car either. They also fit my 7J/8J staggered rims perfectly (not bulge, no stretch). That means they'll be stretched on your wider wheels. The point I'm making is not so much "copy me" as just stating the sidewall profile isn't ideal. That said, with those width wheels it's pretty difficult to get close to radius the car is designed for. 
basch32 wrote:Know that threads on tyres for the mr2 are all over the place and I have looked at these and the tyre calculator app.
I ahve just got a set of Super Advans SA3R 17x8 and 17x9
Looking to put 225/45/17 front and 255/45/17 rear will these work?
the 45 aspect ratio is a percentage of the tyre width. eg. 45% of 225mm = 101.25mm tyre wall height, 45% of 255mm = 114.75mm tyre wall height. If you want similar tyre wall height and rolling radius front and rear 225/45/17 front and 255/40/17 rear would be a better choice (40% of 255mm = 102mm tyre side wall height). +35 front and +38 rear., 235/40/17 rears.. im hoping they fit flush and no work will be needed.. the car is standard at the momentLibertine wrote:im about to fit some 17" to my car
205/40/17 fronts
Ryan6926 wrote:Libertine wrote:im about to fit some 17" to my car
205/40/17 fronts
If I were you personally I'd be looking into 205 45 17 as opposed to the 205 40's in order to try and keep the rolling radius closer to each other with the 235's
If not then the rear tyres will have a bigger radius so it won't look right IMO
Personally, I wouldn't make the fronts more wrong just to get them to match up with the suboptimal rears.shinny wrote:Ryan6926 wrote:Libertine wrote:im about to fit some 17" to my car
205/40/17 fronts
If I were you personally I'd be looking into 205 45 17 as opposed to the 205 40's in order to try and keep the rolling radius closer to each other with the 235's
If not then the rear tyres will have a bigger radius so it won't look right IMO
That's a really common setup that Libertine is suggesting.
Instead, if you have 8J rear wheels I'd fit 245/35/17s back there to get an almost perfect match for the stock 225/50/15s and then go 215/40/17 at the front to keep the stagger to 30mm.
I had 215 45 17 fronts and 235 45 17 rears on the car when I got it, the rears were soon removed, I went over to 245 40 17's and had no issue with rubbing etc. I maybe wrong but if you do stick with the smaller profile on the front the rear of the car would then be sitting higher than the fronts due to the height difference in the profiles unless I've read into it wrong? Ryan6926 wrote:I maybe wrong but if you do stick with the smaller profile on the front the rear of the car would then be sitting higher than the fronts due to the height difference in the profiles unless I've read into it wrong?
The stock tyres are 195/55/15 and 225/50/15 but have very similar sidewall heights. (In fact, the stock front tyres have a 10mm smaller diamter than the stock rears) 
(and let's face it, we're talking 17mm diameter and thus only 8.5mm ride height). My understanding is that some rake is actually beneficial to stability. Certainly when I was having my car corner weighted, the engineer was very deliberately raising the rear corner to equalise the cross weights rather than dropping the other rear corner or raising the diagonal front corner.& 8.5 but with stock suspension here I have coilovers so have decided t go 225/45 front and 245/45 rear. I know the rolling radius is different to the stock setup but the extra sidewall i wanted so will see how i get on. Will report back 