2016 Mazda 3 2.5 vs 2.0 engine - Page 2 - Mazda3 Forums : The #1 Mazda 3 Forum
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post #11 of 16 (permalink) Old 08-09-2016, 11:49 PM
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Don't forget what the man said, "...people will always someone dumber than you." Of course we both know the truth about unsprung weight and the additional rotation mass of having the rim further from the point of axis.
Please, all this for a conversation about the guy feeling like the ride was better with the larger wheels after he himself test drove it. Go ahead and ride around on your 15 inch wheels feeling all scientific. A smarter man would just upgrade the brakes to tame all that "additional mass," unsprung weight, junk in the trunk whatever. And add more power to the engine to compensate.

I digress, the guy said the ride was more comfortable with the larger wheels. So put your physics on that.

I understand the "physics" behind everything you're saying, but you've gone subatomic on a visceral element. Pardon me I may have been to broad in my statement to satisfy your attention to minutiae.

Clearly we all understand the "truth of additional rotational mass and unsprung weight."

Nobody was arguing anything about unsprung weight and handling. In fact no body was arguing anything until you chimed in with your dismissals.

I used a simple analogy to explain a simple concept. It was apples to apples just not Fiji's to Fiji's. You think your smart, but you're really just a jerk.



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post #12 of 16 (permalink) Old 08-10-2016, 09:30 AM
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@Phames11 , dude, you need to get yer'self edumacated.

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post #13 of 16 (permalink) Old 08-10-2016, 11:46 AM
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@Phames11 , dude, you need to get yer'self edumacated.


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post #14 of 16 (permalink) Old 08-10-2016, 12:04 PM
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post #15 of 16 (permalink) Old 08-10-2016, 08:10 PM
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Hi Everyone,

I have taken both the i Grand Touring and the S Grand Touring. I am super into cars and I believe there is a big difference with these two engines. The 2.5 had more power, and the car overall felt smoother when speeding up. Curious to other people's impressions.

What do you all think about the 16 inch tires vs the 18 inch tires? Clearly, the 16 inch tires are higher profile. The dealer said the 18 inch tires should be a rougher ride, but I did not experience this all at. Your thoughts?

Thanks for your input!
A manual transmission would let you get more response from the 2.0L. With an automatic, just get the 2.5L.

As general rule, larger wheels are noisier and ride harder, but higher end trims can have more sound deadening and a softer suspension to compensate. A 16 inch higher profile wheel can also absorb impacts from pot holes and curbs better than a larger low profile wheel, simply because there is more sidewall. But yes, larger wheels fill the wheel well better and definitely have more curb appeal.

As for rotational inertia, mpg, and performance, I'll let this youtube video speak for itself:

https://www.youtube.com/watch?v=MnmtFh2f0JM
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post #16 of 16 (permalink) Old 08-10-2016, 09:09 PM
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Don't forget that its far easier to damage a larger wheel. I hit a pot hole with my stock 17's and it bubbled the sidewall and slightly bent the rim. Also, low profile tires have shorter tread life, higher replacement cost, and fewer true all season and winter tire options. Fuel economy is also affected, I have actually noticed a 1-2 MPG increase running my 16" steel wheels with snow tires than my 17" all seasons.
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