Change 15oem rims to 17 aftermarket

Hey my car came with 15"x6" et45 & 195/65r15

Recently I bought some used rims 17" x7.5 ET35 it seems that Toyota uses 215/45 r17 Tyres on the 17" wheels,


I have been thinking to go with a slightly smaller tyre diameter in order to gain some acceleration,

so I might try to go for 215 40 17 that seems to lower the car 15mm (30mm smaller tyre diameter)Online Wheel and Tyre Fitment Calculator. Offset, Tyre Stretch and Speedo Error | Will They Fit

or even better a bit stretched 205 45 17 that lowers the car by 10mm (20mm smaller diameter) Online Wheel and Tyre Fitment Calculator. Offset, Tyre Stretch and Speedo Error | Will They Fit

My main concern is that the ride height might be too low for the area I live and use the car (the condition on the roads is far from perfect) so I consider the 10mm lowering is very safe and even the 15mm lowering is acceptable,

has anyone try it? Noticed except a more bumpy ride any gain in acceleration?



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Thanks , the smaller numbers than Toyota's setup that I would prefer is about the diameter it the tyre (smaller diameter require smaller torque... )

15.7lbs (7.1kg approximately) is the weight of a 15" wheel assembled?(rim &tyre) ?

In my case the rim only weights 10.7kg... (23.5lbs approximately) I expect it to be 9 more kg per tyre (almost 20 lbs,so a total of 20kg per wheel seems a lot... (40to 45 lbs) does anyone know how much weight the oem17" rim or wheel?

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Xliderider ,
Thanks for the info, then it seems about right , so it is good that they are not heavier than the oem rims, so we know that the oem numbers 215/45r17 but I think I should go for 215/40r17 or maybe 205/45r17 slightly stretched Tyre profiles!
Has anyone try it? Is there any info available?

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Just for reference . So finally went for 205/40r17slightly stretched on the 17"x7.5". The car behaves excellent! Although the speedometer is 13%off and the odometer 7% the consumption is very similar 4.3 l/100 on the stock 15 wheels now it tents to go to 4.6l/100 but steering and braking are like twice as good it used to be! And there is a slight increase in cabin vibrations about 10% to 15 %! Maybe next year I will go for 205/45/17

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Yup the actual consumption remained at 4.2 to 4.3 plus the 7%error that the car do not know about gives 4.6l/100km (4.3*1.07=4.601) I might say that the acceleration gained a bit but I will check that for sure the next days, I can say for the moment that the extra 3kg per rim did not make it to accelerate slower that before it seems to be the same or even better but I must check when I find an open area to play a bit... The only reason I would return to Toyota's 215/45r17 would be in order to have the dash operating again instead of the android apps... At the moment I have turned the osd off since it confuse me even more ... The speedometer on the dash dials is at 113to 114km/h in order to get 100km to gps which is about right it is 6% off the speedometer than the odometer plus 7% error now, since I have changed the outer diameter with a smaller one... (About 4cm smaller diameter almost 1.6")

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Online Wheel and Tyre Fitment Calculator. Offset, Tyre Stretch and Speedo Error | Will They Fit