IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Does your 2008 LEXUS IS250 Run slower with stock tire set up 18inch stock rims

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Old 10-12-13, 07:14 AM
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lexus832
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Default Does your 2008 LEXUS IS250 Run slower with stock tire set up 18inch stock rims

255 in the back and 225n in the front.. just got new tires and it feels slower.. is it breaking in?

any suggestion for different size
Old 10-12-13, 08:51 AM
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badx33
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well make sure the tires have the right air pressure.
Old 10-12-13, 09:59 AM
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rayac88
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tire weight and "stickiness" affect performance. should be minimal difference you feel. just how tires affect braking they affect launch. but once your rolling it should be fine. im sure its just placebo affect. in an 1/8 mile different tires have only affected my times within 1/10 of a second. no wear near noticeable.
Old 10-12-13, 10:24 AM
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lexus832
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I am going to check the tire pressure.. it seems like the are breaking in.. have you all ever heard of a break in period?
Old 10-14-13, 10:27 AM
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SeanO
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Of course theres a wear in period.. just like anything that involves friction.. as stated make sure air pressure is the same across the board. If your tires are directional that will make a difference as well.
Old 10-14-13, 11:04 AM
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WylieKylie
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If you threw whichever set of round rubber things on the car with no regard to anything other than the width you shouldn't be surprised that the car lost "performance".

On the other hand, with no other information than what you were expecting versus what you felt after driving the first time you shouldn't assume the car lost or gained anything.

If you want some kind of objective opinion on what is going on you need to post up more information.
Old 10-14-13, 04:55 PM
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lexus832
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Originally Posted by WylieKylie
If you threw whichever set of round rubber things on the car with no regard to anything other than the width you shouldn't be surprised that the car lost "performance".

On the other hand, with no other information than what you were expecting versus what you felt after driving the first time you shouldn't assume the car lost or gained anything.

If you want some kind of objective opinion on what is going on you need to post up more information.
My apologies, sorry for the limited info..

Wow I tell you one thing OMG the steering is so bad *** now with the 255's in the back

Set up is:

Rear 255/40/R18 yokohama YK580

Front225/40R18XL Falken Ziex ZE62 +

they feel faster now that I have broke them in. I remember that now when I put tires on my old 02 Mustang GT
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