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Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? - Car Talk - Nairaland

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Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by phensbassey: 9:00am On Jun 09, 2016
I need advice pls on what to do, the back tyres on our Lexus Rx350 is bigger than the front: like the back is R18-60, while the front isR18-55, the tyres wiil expire by the end of this year, I want to change them..
should I change all four or only the front which are smaller?...which is safer...considering that am on low budget..
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by paix(m): 9:26am On Jun 09, 2016
Just change the spare tyre and your problem is solved. Thank me now not later.

2 Likes

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by kingreign(m): 11:44am On Jun 09, 2016
phensbassey:
I need advice pls on what to do, the back tyres on our Lexus Rx350 is bigger than the front: like the back is R18-60, while the front isR18-55, the tyres wiil expire by the end of this year, I want to change them..
should I change all four or only the front which are smaller?...which is safer...considering that am on low budget..

The default setup which is recommended for an RX350 is P235 55 R18 99V.
Stick to this set up and follow your recommended cold air pressure reading.
Cheers!

1 Like 1 Share

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Nobody: 12:11pm On Jun 09, 2016
phensbassey:
I need advice pls on what to do, the back tyres on our Lexus Rx350 is bigger than the front: like the back is R18-60, while the front isR18-55, the tyres wiil expire by the end of this year, I want to change them..
should I change all four or only the front which are smaller?...which is safer...considering that am on low budget..

On a vehicle with permanent AWD, it is not advisable to mix tyres of different sizes. The smaller tyres will be rotating at different speeds to the larger ones - that is faster, and the centre differential will be working constantly, to equalise the different speeds between the front and rear axles.

This will eventually destroy the centre differential, which is integral with your transmission. Don't you read your vehicle Owner's Manual?

24 Likes 3 Shares

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by seyema(m): 6:13pm On Jun 09, 2016
Most tokunbo cars in Nigeria doesn't come with manual

2 Likes 1 Share

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by kingreign(m): 6:38pm On Jun 09, 2016
seyema:
Most tokunbo cars in Nigeria doesn't come with manual

Wrong, rather most tokunbo cars in Nigeria has owners manual.

7 Likes 1 Share

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Nobody: 8:23pm On Jun 09, 2016
seyema:
Most tokunbo cars in Nigeria doesn't come with manual

That's not a valid excuse.

Not every car I have purchased has had an Owner's Manual. Every car I have later sold on has had an Owner's Manual.

3 Likes 1 Share

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by seyema(m): 8:38pm On Jun 09, 2016
Siena:


That's not a valid excuse.

Not every car I have purchased has had an Owner's Manual. Every car I have later sold on has had an Owner's Manual.
How did you usually get the owners manual later
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by seyema(m): 8:39pm On Jun 09, 2016
kingreign:

Wrong, rather most tokunbo cars in Nigeria has owners manual.
Well, maybe most of those have seen sha
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Nobody: 9:04pm On Jun 09, 2016
seyema:

How did you usually get the owners manual later

Uhm, buy one?
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Pelaiye2703(m): 6:45am On Jun 10, 2016
Protecting your life is the safest...
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by mebad(m): 6:48am On Jun 10, 2016
Siena:


Uhm, buy one?

Oga Siena no get chill at all . But then again most of these manuals can easily be downloaded

2 Likes

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by ceekay247: 6:50am On Jun 10, 2016
Life first! Change the small ones first to make all be of equal size. You can then make provision for expiring ones. God bless you

2 Likes

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by MilesLamar(m): 6:51am On Jun 10, 2016
Oga Siena don talk.. follow him advice

1 Like

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by amclimax(m): 6:54am On Jun 10, 2016
Your car, your tire, your money and most important your life....

1 Like

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by fckmn24seg(m): 6:56am On Jun 10, 2016
paix:
Just change the spare tyre and your problem is solved. Thank me now not later.

Badt guy
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by ibez007(m): 6:58am On Jun 10, 2016
Broz, Better change erytin!...


**Life no get duplicate fah
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by AntiWailer: 7:00am On Jun 10, 2016
phensbassey:
I need advice pls on what to do, the back tyres on our Lexus Rx350 is bigger than the front: like the back is R18-60, while the front isR18-55, the tyres wiil expire by the end of this year, I want to change them..
should I change all four or only the front which are smaller?...which is safer...considering that am on low budget..

Change the 2 that is not the standard size and put in front.


Just plan to change the other 2 in 6 months time

2 Likes 1 Share

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Fogman(m): 7:03am On Jun 10, 2016
Your ftont and back tyres shiuld be of same size. Please consult your owner manual for the appropriate size for your vehicle.
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by femi4: 7:11am On Jun 10, 2016
phensbassey:
I need advice pls on what to do, the back tyres on our Lexus Rx350 is bigger than the front: like the back is R18-60, while the front isR18-55, the tyres wiil expire by the end of this year, I want to change them..
should I change all four or only the front which are smaller?...which is safer...considering that am on low budget..
All four tyres must be the same in recommended size.

Qed

1 Like

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by femi4: 7:14am On Jun 10, 2016
seyema:

How did you usually get the owners manual later
its easy, e.g if your car is Honda accord 2008, just typed in Google " Honda accord 2008 manual pdf".

Thank me later!

2 Likes 2 Shares

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by SmithHumble50: 7:16am On Jun 10, 2016
Please change d whole four..

Na 9ja mentality u wan use for d car?

That's a correct car na... Pls treat it nice .

If u can't change d whole 4 tyres... Sell d car and buy a smaller car...
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by missmalachi: 7:18am On Jun 10, 2016
If u can,change all d 4 tyres.i just did mine last week for rx 330 but menh i did nt knw they are dis expensive.
Beside they might hv all expire.
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by oscillation55(m): 7:19am On Jun 10, 2016
Replace the front ones with same sized ones as the back but if you can procure all four at once then go for it. life's precious preserve yours.
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by wiloy2k8(m): 7:20am On Jun 10, 2016
u dey drive rx350 . thats a cool car ..
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by nedu2000(m): 8:35am On Jun 10, 2016
I use a size 17 tyre,bought each at N19,000. It's best they are of equal size. Since the ones in front are of inappropriate size change them 1st then change the rare tyres a bit later on since you are on a budget
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Aladine(m): 8:41am On Jun 10, 2016
Hello siena.
I can hear a knocking sound from my engine when i try to fire it. It was recently worked on when the mechanic said it was overheating and changed the top gasket. Now somone is claiming its metal..i duno what metal is on an engine..that the metal has degraded. Since i cant tel u exactly how the sound is..let me attempt to spell it.."krokrokrokrokrorkrokro".lol..i need yur advise
Its a Toyota corolla 2011

1 Like

Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by shiki(m): 8:54am On Jun 10, 2016
If you are financially equipped, change the 4 tyres
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by pedrilo: 8:58am On Jun 10, 2016
I like d shape of d car
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by Youngetskilz23(m): 9:29am On Jun 10, 2016
Aladine:
Hello siena.
I can hear a knocking sound from my engine when i try to fire it. It was recently worked on when the mechanic said it was overheating and changed the top gasket. Now somone is claiming its metal..i duno what metal is on an engine..that the metal has degraded. Since i cant tel u exactly how the sound is..let me attempt to spell it.."krokrokrokrokrorkrokro".lol..i need yur advise
Its a Toyota corolla 2011
change your timing chain... thank me later. after that change oil filter and get new engine oil... had same experience on my benz.. the krokkrokkrokkrok sound stoped. enjoy
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by sidebayo(m): 10:46am On Jun 10, 2016
use Ideri IKE ODA, two small ones at the front and two big ones at the back, already follow come allow rims
Re: Which Is Safer? Changing Two Front Tyres Whic Are Smaller? Or All Four Tyres? by largehead: 10:56am On Jun 10, 2016
Siena:


On a vehicle with permanent AWD, it is not advisable to mix tyres of different sizes. The smaller tyres will be rotating at different speeds to the larger ones - that is faster, and the centre differential will be working constantly, to equalise the different speeds between the front and rear axles.

This will eventually destroy the centre differential, which is integral with your transmission. Don't you read your vehicle Owner's Manual?
sir! I don't understand. can u break down what u jst wrote?

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