Go Back   Team-BHP > Under the Hood > Technical Stuff


Reply
 
Thread Tools Search this Thread
Old 4th September 2013, 10:30   #1
BHPian
 
D'Artagnan's Avatar
 
Join Date: Aug 2011
Location: Bangalore
Posts: 261
Thanked: 126 Times
Default Purpose of Wheel Cladding?

What is the use of wheel cladding with respect to performance or aerodynamics?

As far as I can understand I think they're used to reduce the road noise from the tyres is there any other purpose?. Why do some cars come with full cladding inside the bumper and some are only partially filled?.

Cars abroad have a a small rectangular piece which might be an inch or two in length and this is fixed to the front if the wheel cladding (inside) I would like to know what is their usage too?
D'Artagnan is offline   Reply With Quote
Old 4th September 2013, 12:50   #2
Distinguished - BHPian
 
arunphilip's Avatar
 
Join Date: May 2007
Location: Chennai
Posts: 1,728
Thanked: 4,700 Times
Default re: Purpose of Wheel Cladding?

Quote:
Originally Posted by D'Artagnan View Post
What is the use of wheel cladding with respect to performance or aerodynamics?

As far as I can understand I think they're used to reduce the road noise from the tyres is there any other purpose?. Why do some cars come with full cladding inside the bumper and some are only partially filled?.
The wheel well cladding is used to minimize road noise, especially during highway cruising (in Indian cities, you'll never hear the tires over the din of everything else).

There are various variations:
  • No cladding at all, metal is exposed
  • Partial cladding, usually towards the passenger compartment
  • Full plastic cladding
  • Plastic cladding covered by a felt-like material

For instance, my EcoSport has a full plastic cladding in the front wheel wells, and the plastic+felt in the rear wheel wells. This approach is taken because the rear tyres sit directly under the passenger compartment, and need more sound insulation. The front tyres usually sit ahead of the firewall, which provides an added amount of sound insulation.

Partial & no claddings are usually done for cost reasons.

Quote:
Originally Posted by D'Artagnan View Post
Cars abroad have a a small rectangular piece which might be an inch or two in length and this is fixed to the front if the wheel cladding (inside) I would like to know what is their usage too?
It might help if you could share a picture of this. Typically, things placed ahead of the wheel cladding are used to shape airflow beneath the car. While this is often seen in high performance cars (e.g. a diffuser), normal road cars have also started using these to reduce drag and subtly improve mileage.
arunphilip is offline   (1) Thanks Reply With Quote
Old 5th September 2013, 11:59   #3
BHPian
 
D'Artagnan's Avatar
 
Join Date: Aug 2011
Location: Bangalore
Posts: 261
Thanked: 126 Times
Default

Quote:
Originally Posted by arunphilip View Post

The wheel well cladding is used to minimize road noise, especially during highway cruising (in Indian cities, you'll never hear the tires over the din of everything else).

There are various variations:
[*]No cladding at all, metal is exposed[*]Partial cladding, usually towards the passenger compartment[*]Full plastic cladding[*]Plastic cladding covered by a felt-like material


For instance, my EcoSport has a full plastic cladding in the front wheel wells, and the plastic+felt in the rear wheel wells. This approach is taken because the rear tyres sit directly under the passenger compartment, and need more sound insulation. The front tyres usually sit ahead of the firewall, which provides an added amount of sound insulation.

Partial & no claddings are usually done for cost reasons.

It might help if you could share a picture of this. Typically, things placed ahead of the wheel cladding are used to shape airflow beneath the car. While this is often seen in high performance cars (e.g. a diffuser), normal road cars have also started using these to reduce drag and subtly improve mileage.
So other than road noise there isn't any other purpose for the inner wheel cladding both front and back. And the purpose of providing partial cladding is purely due to cost measures and has got nothing to do with aerodynamics, except of course it might also aid in keeping the car a bit slush free

I'm trying to source an image for the tiny rectangular bit added just below the wheel cladding but am unable to find it on google. I saw this in an episode of top gear when the stig was driving the ford fiesta rs around the hammer head. That bit just below the wheel cladding stood out when he cut sharp. Now I'm not sure if its below the cladding or placed before it. Could you please explain as to how would this improve the aerodynamics, does it have something to do with air flow?
D'Artagnan is offline   Reply With Quote
Old 5th September 2013, 15:03   #4
Distinguished - BHPian
 
arunphilip's Avatar
 
Join Date: May 2007
Location: Chennai
Posts: 1,728
Thanked: 4,700 Times
Default Re: Purpose of Wheel Cladding?

Quote:
Originally Posted by D'Artagnan View Post
I'm trying to source an image for the tiny rectangular bit added just below the wheel cladding but am unable to find it on google. I saw this in an episode of top gear when the stig was driving the ford fiesta rs around the hammer head. That bit just below the wheel cladding stood out when he cut sharp. Now I'm not sure if its below the cladding or placed before it. Could you please explain as to how would this improve the aerodynamics, does it have something to do with air flow?
Was it something like this?
Name:  2456_14lo.jpg
Views: 3158
Size:  18.5 KB
Note: image copyright belongs to its respective owner on autospeed.com

If so, it supports my statement about this being used to modify airflow under the car.

This page from the AutoSpeed site is a comprehensive view on how these type of deflectors are used to shape the airflow.
arunphilip is offline   Reply With Quote
Old 19th January 2015, 13:27   #5
BHPian
 
rav11stars's Avatar
 
Join Date: Sep 2014
Location: RJY->PUN->DXB
Posts: 287
Thanked: 544 Times
Default Re: Purpose of Wheel Cladding?

I've noticed this in my Punto Evo as well. The wheel well is sort of naked exposing the body to dirt. On the other hand I've noticed that the Maruti and Hyundai cars come with the wheel well cladding.
Any idea if we can get such cladding for the Punto as well?
rav11stars is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
CELEBRITY:which car they drive? for which purpose? Bob Shifting gears 24 2nd July 2015 07:36
Cladding on the inside of the Boot Achyuth Vaibhav Modifications & Accessories 14 17th July 2013 21:29
Scorpio Query - SLE black with grey cladding? Randhawa SUVs, MUVs & 4x4s 16 10th September 2009 11:12
purpose of tachometer jagjeet Technical Stuff 3 27th June 2008 16:12
Cladding for Tata Safari? tsk1979 Modifications & Accessories 60 23rd May 2007 06:04


All times are GMT +5.5. The time now is 06:00.

Copyright 2000 - 2017, Team-BHP.com
Proudly powered by E2E Networks