Why rougher/louder ride with 20" from 19"

MarioKart · 04-27-2008, 01:06 AM

I just sold my 19" wheels for 20" and my car rides rougher and louder. The 20's have the same profile in mm and in width. I'm wondering why the car rides so much stiffer, rougher and louder. Could it be just the tires? I did go from Falken 452's to General Exclaim UHP.
Any ideas.
TIA
Mario

E90330iS · 04-27-2008, 02:44 AM

The bigger the wheels you get should always get more bounce.

e.n335 · 04-27-2008, 05:28 AM

The smaller the sidewalls, the rougher and stiffer the ride. No idea about the increased noise. I use Falken FK-452 tires and 19" rims ( staggered ). They are smoother than 18" runflats.

SV Concepts III · 04-27-2008, 08:30 AM

Bingo, you have less tire on there.

BMdblU · 04-27-2008, 09:54 AM

You got 20's.. what did you expect?

MarioKart · 04-27-2008, 11:36 AM

Quote:

Originally Posted by Nick@Jlevi SW

Bingo, you have less tire on there.

I don't have less side wall, my 19's were 225/35, 265/30 and so are my 20's. Everything is the same but the diameter.

emjei · 04-27-2008, 10:20 PM

With those measurements you have probably one querter inch less in tire wall height

Revlis · 04-27-2008, 11:18 PM

Quote:

Originally Posted by emjei

With those measurements you have probably one querter inch less in tire wall height

How does that work? 225/35 is still a tire with a sidewall that is 35% as wide as the tread correct? So there isn't really any difference right, not in sidewall anyway. Contact patch is going to be very slightly larger, the car will likely suffer do to the increased weight and over all rotating diameter, but otherwise...

So yeah.

04-27-2008, 01:06 AM	#1
MarioKart Lieutenant 68 Rep 493 Posts Drives: Black on Black Join Date: Mar 2008 Location: Ventura, CA iTrader: (13)	Why rougher/louder ride with 20" from 19" I just sold my 19" wheels for 20" and my car rides rougher and louder. The 20's have the same profile in mm and in width. I'm wondering why the car rides so much stiffer, rougher and louder. Could it be just the tires? I did go from Falken 452's to General Exclaim UHP. Any ideas. TIA Mario __________________ 15' YMB M4, TC Kline ℅ camber plates, AWE Exhaust 544whp Stage 1 Map. Past E90 335iA BLK/BLK 19" IForged Daytona, UR Intake, JB3 2.0, RR DP, AA intercooler, HKS BOV, KWV2, 424whp
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04-27-2008, 02:44 AM	#2
E90330iS Major General 143 Rep 6,333 Posts Drives: BMW M4 Join Date: Jan 2006 Location: Arcadia, California iTrader: (56) Garage List 2006 330i [0.00]	The bigger the wheels you get should always get more bounce. __________________ 2017 BMW M4 DCT Lease Transfer: https://f80.bimmerpost.com/forums/sh...8#post23736398
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04-27-2008, 05:28 AM	#3
e.n335 Moderator 270 Rep 4,481 Posts Drives: e93 ///M3 DCT, 07/2009 Join Date: Feb 2007 Location: Switzerland, ZH iTrader: (0)	The smaller the sidewalls, the rougher and stiffer the ride. No idea about the increased noise. I use Falken FK-452 tires and 19" rims ( staggered ). They are smoother than 18" runflats.
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04-27-2008, 08:30 AM	#4
SV Concepts III Lieutenant General 375 Rep 17,017 Posts Drives: BMW Duh Join Date: Apr 2005 Location: Santa Clara iTrader: (13)	Bingo, you have less tire on there.
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04-27-2008, 09:54 AM	#5
BMdblU Brigadier General 152 Rep 3,983 Posts Drives: F80 Join Date: Oct 2007 Location: Toronto iTrader: (2)	You got 20's.. what did you expect?
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04-27-2008, 10:20 PM	#7
emjei Captain 73 Rep 821 Posts Drives: 08 BMW M3 Coupe Join Date: Apr 2007 Location: Puerto Rico USA iTrader: (3)	With those measurements you have probably one querter inch less in tire wall height
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