235/45R18 on Stock 18" Wheels
#2
I was asking this same question last weekend whether they would reduce impact or road noise. I'd love to get a 1/2" of side wall to reduce bumps. Maybe add some curb protection as it would be a little wider too.
#3
Well it just appears to me like the tire just isnt quite squared up enough, like it needs just a bit more tread width to square it up for the rim. Would love to see a 235 or 245 on it in pictures.
#6
Wow thank you! Compared to the 225's how are the 235's? Is the ride softer? How is the handling? I also have a UL PKG w.18's and I just recently got new tires...but if I would have known I would have went with 235's over 225's
#7
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#8
Just a bit of added information for those who might be interested but who don't want to have to do the math.
The difference in sidewall height in going from the 225/45 tires to the 235/45 tires is about .177 inch. The resulting .354 inch increase in total wheel + tire diameter does mean that the speedometer and odometer readings will be changed by about 1.3%. That is a small enough difference that, in the real world, it won't be an issue for most, but it does mean that there will be a small change in speedometer and odometer accuracy.
The difference in sidewall height in going from the 225/45 tires to the 235/45 tires is about .177 inch. The resulting .354 inch increase in total wheel + tire diameter does mean that the speedometer and odometer readings will be changed by about 1.3%. That is a small enough difference that, in the real world, it won't be an issue for most, but it does mean that there will be a small change in speedometer and odometer accuracy.
#9
Just a bit of added information for those who might be interested but who don't want to have to do the math.
The difference in sidewall height in going from the 225/45 tires to the 235/45 tires is about .177 inch. The resulting .354 inch increase in total wheel + tire diameter does mean that the speedometer and odometer readings will be changed by about 1.3%. That is a small enough difference that, in the real world, it won't be an issue for most, but it does mean that there will be a small change in speedometer and odometer accuracy.
The difference in sidewall height in going from the 225/45 tires to the 235/45 tires is about .177 inch. The resulting .354 inch increase in total wheel + tire diameter does mean that the speedometer and odometer readings will be changed by about 1.3%. That is a small enough difference that, in the real world, it won't be an issue for most, but it does mean that there will be a small change in speedometer and odometer accuracy.
My speedometer is off by about that much so going to the 235 would correct it to be a nearly exact reading. Thanks for the above pictures. I might just do this as well.
New tires usually get poorer fuel economy due to the tread depth catching more wind but how has your fuel economy been impacted by the wider albeit somewhat heavier tire?
Last edited by madsen203; 01-30-17 at 08:23 AM.
#10
That does not surprise my, and that is why I chose to say that the change in tire size will change the accuracy of the speedometer and odometer by about 1.3%, and why I did not say that it will (necessarily) make the speedometer and odometer 1.3% less accurate.
If your speedometer and odometer on your car are giving readings that are a bit higher than they should be, the change in tire size will make the speedometer and odometer more accurate than it was before. If, on the other hand, the speedometer and odometer are giving readings that are a bit lower than than they should be, the change in tire sizes will make those readings even a bit more inaccurate than they had already been.
If your speedometer and odometer on your car are giving readings that are a bit higher than they should be, the change in tire size will make the speedometer and odometer more accurate than it was before. If, on the other hand, the speedometer and odometer are giving readings that are a bit lower than than they should be, the change in tire sizes will make those readings even a bit more inaccurate than they had already been.
#11
Can't quite tell from these pictures but what model Michelin are these tires. I was looking for the MXV4 in the 235/45R18 but can't seem to find them locally. Where did you get yours?
#12
I think the MXV4 was replaced by the Premier - there were some leftover MXV4s for awhile but it sounds like that supply has dried up.
#13
#15
The stocks are 225/45/18. I'm not sure if having 235/45/18 is necessary. The extra contact patch for the rubber on the road will contribute to more road noise and increased fuel consumption due to additional drag. This modification will make the car more sticky to the road if you are going to auto-cross, but I doubt any of us bought an ES for the track! I also think the 235s cost a little bit more. Seems like a big trade-off for slightly better looks -- which is still debatable.