Lexusgs430:

Size 18 alloys wheels will kill fuel economy ? What about the beauty the 18' alloys adds to the feet of the vehicle? I run 220/40/18 on the rear (both sides I hasten to add) and 215/35/18 on both front. Makes the ride @ high speed more stable !!!!!
The deep dish 18' split alloys always tempts me to wash them and bring out the shine, forget fuel economy and look beautiful !!!!!

icemann:

You think everyone here is a university student wallowing at home cos of ASUU strike? You need to understand nigerians from all over the world with Education from Top engineering schools post here. Trac, Sultan,siena, zim, Ikenna, car doc, Nissan parts and so may others i forgot to mention [/b] are people who know the stuff and i give them the respect.[b] You my friend need to find your level

Finestlex: rim is rim and has nothing to do with fuel consumption.. I guess your car is an SUV.. it's only the 16rim tyre that you need to change to 18 along with the tyre. *I run 220/40/18* no tyre number is 220. I suppose you wanted to say 235 or 225 or 245 or 255.. my parents deal on tyres before I was born till date so I know everything in Case you got more questions

Onyenna:

235-50-18 and 245-50-18 will have same height..the only difference is the width(ie 235 & 245)...255-40-18 will still be of same height but shorter-stomach-area(by the side) and it will probably have the largest width compared to 235 and 245...they all have a difference of 10(width-wise) ie 235,245 and 255...... Summary: they all have same height which means your car is Balanced..... You're not in any Danger sir.....

Finestlex: rim is rim and has nothing to do with fuel consumption.. I guess your car is an SUV.. it's only the 16rim tyre that you need to change to 18 along with the tyre. *I run 220/40/18* no tyre number is 220. I suppose you wanted to say 235 or 225 or 245 or 255.. my parents deal on tyres before I was born till date so I know everything in Case you got more questions

lomomike:

You smack of ignorance. How can you just come online and display your ignorance its a shame Your parents sold tyres before you were born yet you you really don't know what tyres is all about.
Tyre rims height, diameter, weight, width etc is directly proportional to MPG. Why didn't the car manufacturers who know much about their product after subjection their products to batteries of test just write "rim is rim and has nothing to do with fuel consumption..."?

Finestlex: hehehehehe... when I said rim is rim, I meant 18rims.. as the thread dude created.. was trying to correct a brother who said the folk needs to get four new 18rims when he already has 3. Fuel consumption has to do with engine and not tyres. You need to grow up..

Finestlex: hehehehehe... when I said rim is rim, I meant 18rims.. as the thread dude created.. was trying to correct a brother who said the folk needs to get four new 18rims when he already has 3. Fuel consumption has to do with engine and not tyres. You need to grow up..

MD-CEO:


Actually, when i browsed it, i found that the second set of figures, thats the '50' or '40' is not an absolute statement of the height of the tyre. Rather, it is a percentage of the width of the tires. Thus the 50 actually means 50% of the width (thats 50% of 235 or245).
So if thats the case, then the tire width will determine the height even if they are both size 50 for the middle pair of figures.

Finestlex: hehehehehe... when I said rim is rim, I meant 18rims.. as the thread dude created.. was trying to correct a brother who said the folk needs to get four new 18rims when he already has 3. Fuel consumption has to do with engine and not tyres. You need to grow up..

abatically: Also using 18" rim doesn't necessarily mean the car will be higher, it depends on the aspect ratio. A 15" rim tyre can make a car higher than some 18" tyres.

femi9naija: The width of a tire doesn't determine it's height. It's more like saying the broader your table, the taller.

femi9naija:
The width of a tire doesn't determine it's height. It's more like saying the broader your table, the taller.

Onyenna:

a) 195/70x14.
b) 185/80x14.

Which is higher?

Kashif: Siena is getting me a little confused. If you install a tire with wider rim (diameter), shorter walls, same width and achieve same installed diameter, does it affect economy? I was thinking the torque is transferred to the overall assembly, not just the rims.

Onyenna: There is a very BIG difference between 185/80x14 and 195/65x14 in terms of height.....185/80x14 is higher than 195/65x14....the difference is MUCH! So to answer your question; Siena, a tyre's width does NOT in any way determine it's height.......

Siena:

You'll need to be clearer in your query, bro. If you read your post again, you'll find you're getting your dimensions mixed up.

Width is NOT diameter.

Lexusgs430:

Size 18 alloys wheels will kill fuel economy ? What about the beauty the 18' alloys adds to the feet of the vehicle? I run 225/40/18 on the rear (both sides I hasten to add) and 215/35/18 on both front. Makes the ride @ high speed more stable !!!!!
The deep dish 18' split alloys always tempts me to wash them and bring out the shine, forget fuel economy and look beautiful !!!!!

MD-CEO:
I just got a registered Nissan Altima 2003 a few days ago.
Today I noticed that one of the the tyres (drivers side front tyre) went flat and is completely bad. I changed it to the spare and decided to look closely at all the other tyres.
To my amazement, i found that all the other 3 remaining tyres had different sizes.
The sizes are-
235-50-18
245-50-18
255-40-18.

Meanwhile, i checked the car user manual i downloaded online, and found that the recommended tyre size was 205-65-R16.

Is there any immediate danger in driving them as they are now?
I'm asking because i'm really hard pressed for cash this Christmas season with so many other things to do simultaneously. I'll prefer deferring changing all 4 tyres till sometime in January when there'll be more cash liquidity for me.
For now, i can only really afford to buy one tyre to replace the single one that went bad.
What size should i buy now with the multiple sizes I already have on the other 3 tyres.
What do you advise?

Onyenna:

235-50-18 and 245-50-18 will have same height..the only difference is the width(ie 235 & 245)...255-40-18 will still be of same height but shorter-stomach-area(by the side) and it will probably have the largest width compared to 235 and 245...they all have a difference of 10(width-wise) ie 235,245 and 255...... Summary: they all have same height which means your car is Balanced..... You're not in any Danger sir.....

Onyenna:

235-50-18 and 245-50-18 will have same height..the only difference is the width(ie 235 & 245)...255-40-18 will still be of same height but shorter-stomach-area(by the side) and it will probably have the largest width compared to 235 and 245...they all have a difference of 10(width-wise) ie 235,245 and 255...... Summary: they all have same height which means your car is Balanced..... You're not in any Danger sir.....