I have recently over the weekend, changed one of my car (iswara 1.5s manual) tyre + rim to 15".

Previously i am using 175/70R13 and now i am running on 195/50/R15 (Sime Astar 300 or something).

Initially i have a problem with the back tyre scraping the suspension and with the installation of a spacer, i kinda have the problem solved.

but now, everytime i press my brake pedal, i can hear some groaning sound and felt my brake pedal vibrating/giving some vibrating feedback. i try to listen and the sound is coming from the left (passenger side) of the car. but i cant pinpoint it to the rear or front wheel.

previously on my 13", there is no vibration feedback on the pedal unless under very very hard braking.



what could it be ?

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is this technical talk?

check your brake assembly first. see if the spacer is placed properly. then check if you wheel is balanced an aligned properly. usually these two things can cause these 2 problems.

wheel is balanced and aligned properly... that i make sure...
brake assembly also no problem...


now

Your brake rotor in good condition?

Ever change change brake pad?

What kinda sound ? tuk tuk tuk ? bom bom bom? pam pam pam ?

rotor in good condition...
pads change in march 2006....

sound is like tuk tuk tuk tuk when u press the brake pedal...

my gen 2 had the same problem too, went to service yesterday morning, and the technician told me the carbon thingy dirty adi, need to clean.

problem gone after service.

just now went and check with my collegue in the car...
he said the sound is coming from the rear...

my rear = drum brake....
so dont think got carbon....

sigh... trash car also so trouble some


i think might be the rim hitting the suspension when i press the brake....
so going to tyre shop this weekend

that shoudn't happen..............the carrier hub should fix the distance of the rim from the suspension strut. maybe wheel bearings ?

so how's the tyre now?

brake pad slip.....some brake pad will fall out from the pad mounting ,,,

Few factors may occurs.....

Brakes sound / noise....
- Worn Brake Pads.. >>> Change new one
- Not good Brakes Pads... >>> Change to a better one
- Disc Rotor Dirty... >>> flush with lots of water when the brake is COLD

Brakes / Steering shakes
- Allignment Problem
- Balancing Problem
- Rims "Bengkok"
- Tyre "Bengkak"

iswara on 15 " rim

when u press yr brake do u feel any vibration?

if u still using the stock servo/pump

better upgraded it

who say rear drum brakes got no carbon (brake dust), then where does the brake dust form the brake shoe go? ur brake shoe does not wear in after a period of time??

try to service the drum brakes, ususally they will open the hub and clean it up.... since they opening it, see that if ur brake shoe need repalcing.

also check ur brake fluid, does it need bleeding? how long ago was it last bled? is ur brake fluid contaninated with water?
if servicing ur rear drums dont solve ur problems, then i sugget u take a look at the fluid and flush it if needed...

brake pads uneven wear...
dismantle and used sand paper to even the pads surface...

problem gone for a few days...

now its back

if the sound only appear when the brake pad is hot, but no sound when it's cold like just driving for few km...then it's da brake pad problem...

it was happen to my wira...claimed warranty from the same shop few times still the same...at 1st still ok, after few week problem comes again...end up i get another mech to change it, problem solved.

alot of sub-standard brake pad in the market...so be wise choosing for brake pad..

just my 2 cents worth advice...

I think should be the brake pad problem.
Lastime i also had this kinda problem.
After i changed the brake pad, then the sound not came out again.
But not sure which kinda sound you mentioning.....

iswara in 15" also got problem mer? i know some dudes driving sagas and iswaras using up to 17" dont even have to add spacers.

Which brake pads good?

It has more to do with the width of the rim (and its design) than its radius.