Hi, I just got a new set of wheels for my 2008 Accord Coupe EXL-navy 4cyl.

Theses wheels are :19" x 8,5" In the front
19" x 9,5" In the rear


First option:
To get as close as my OEM tire specs, I was looking for 245\35\19 all over, wich is the best choice.

***Second option:
In order to maximize a rear wheel drive car look, I was thinking about runing: 245\35\19 in the front
and
245\40\19 in rear

*Honda HFP 19" is mouted on 245\40\19.

**I want to know if there is any real issue about having a bit smaller size tire in the front. Thinking about VSA, ABS...

I want to get the real technical answer.

Thinking about many rear wheel drive cars having different size from front to back...

Hope to get the answer before buying tires for summer.

Thanks a lot,
I appreciate.
ALex

 

So you bought different width wheels, front vs rear, without any reason why?

Rear-wheel-drive cars use different widths because they use different tire sizes, front vs rear. They do this for handling reasons, to provide relatively neutral handling by adding a bit of understeer to the handling of their cars, which otherwise would lean towards oversteer.

Front-wheel-drive cars already have a bit of understeer to the handling, and don't need any more. That's why FWD cars normally use tires and wheels that are the same size at all four corners. This has the additional benefit of allowing the tires to be rotated periodically to even out the wear.

If you can still return/exchange the wheels, you should. Four tires all 245/40-19 fit your car fine. That size is usually approved for mounting on rims 8.0-9.5 inches wide, so you can use either of the widths you mentioned. But stick to the same width front and rear.

 

I understand all that. The only reason why I took 1"
widder wheel, is to get a 3" lip at rear, and 2" at front. This is something common for style. Anyways, I will probably stick with 245\35\19 all around, that without any problem, since I run all four wheels on same size.

...This is the car of another owner, who did the same wheel set up as mine:

http://www.cardomain.com/ride/3124026

...Many staggered set up are sold even for front wheel drive car:

http://cgi.ebay.com/ebaymotors/19-AX...Q5fAccessories

 

Actually, you're right - 245/35-19 makes a lot more sense (than 245/40) for your car, because it's very close in diameter to your 225/50-17 stock size.

I always think it's funny when someone does something to his car that doesn't make any sense, and tries to justify it by showing that someone else did the same thing (that didn't make any sense for his car, either). LOL!

 

Nsxtasy, I understand your vision on a mecanic point of view. You're right, that doesn't make any sens.

And not have the same size of tire Front\Rear would definitely increase unsteer, and by the way afftect the VSA system. Your're absolutely right about that!

I'll put then 245\35\19 all around.

In the orhter hand...
I am a detailer, my gold is to improve style before everything. So slightly larger chromed lip at at the back is the way to go in customizing whips. Not in a ingenering way of view.

Since we put that in perperctive, I repect your opinion.

 

Then you have specific reasons to do things, for the sake of appearance. That's fine! It's really not all that different from people who have show cars.

If the staggered wheel widths work for you, fine. The 245/35-19 tires can be mounted on both widths.

Along with two Integras.

 

Thank you, I appreciate you experience advice.

Do you have Cardomain page of your rides?

 

No, sorry.

 

Just a last question,

Do you know why The Honda HFP wheel 19" is usually mounted on 245\40\19 , so that isn't the closest diameter as possible from factory 225\50\17.

Also, the v6 models tires are 235\45\18, so that another different diameter.
How come the accord central computer knows the difference between the tires of 4 cyl and v6 model, and also optional HFP 19"...

Is the setting the same for all 4 cyl. and v6 ?
And then, is the 245\35\19 is the most appropriate for my car, Cause Honda tech service kept telling me that for 19" wheel, they recommend 245\40\19

What's your opinion on all that.
Thanks

 

You actually answered your own question, without realizing it. The V6 models come with 235/45-18 tires, whose outer diameter is larger than your stock 225/50-17 size. The 245/40-19 size is closer in diameter to that of 235/45-18 than 245/35-19, which is why it's typically the choice made for the V6 models. The reason that the Honda tech service people are telling you 245/40-19 is that they don't realize that 245/35-19 is a better match for the 4-cylinder models. They probably never bothered (or thought) to look into it. It's also likely that most people getting the HFP wheels have the V6 model rather than the 4-cylinder. But for a 4-cylinder, 245/35-19 is the way to go; it's almost an exact match.

Here are the actual, calculated numbers for the outer diameter of the tire, and you can see why 245/35 definitely makes sense for a 4-cylinder, but not necessarily for the V6:

V6:
235/45-18: 26.33" (stock)
245/35-19: 25.75" (-2.2 percent)
245/40-19: 26.72" (+1.5 percent)

4 cylinder:
225/50-17: 25.86" (stock)
245/35-19: 25.75" (-0.4 percent)
245/40-19: 26.72" (+3.3 percent)

 

Yes you're absolutely wright.
So, when the car cumputer odometer is set at factory, It is set with a diameter of an 225\50\17 for 4 cyl, And 235\45\18 for v6.

So 2 different settings....

All wright thanks Bro.

Would you recommend me to use Pro kit Or Sportline spring for daily use?

 

I really don't know. You might want to ask the experts in the suspension forum.

 

Both good springs. Chose entirely depending on your desired ride height. The sportlines lower the car more.

 

I know the sportline lowers about .5 inches more, but I heard the ride was so terrible with sportline? It's for daily use for my 2008 accord coupe, here in Canada, Quebec, The roads are nothing like in the States!

So, is the ride with Sportline That bad compare to Pro kit?