215/60-15 vs. 205/60-15 tire handling
#1
215/60-15 vs. 205/60-15 tire handling
So between a 215/60-15 and a 205/60-15 tire of the same type, which do you guys think would handle better? The 215 is slightly wider, which should be slightly more traction. But at the same time, the 215 has a slightly taller sidewall, which should mean more sidewall flexing. So do you guys think the slight width advantage cancels out the slight sidewall flex disadvantage?
#6
I agree. Stick to factory tire size.
205/60/15 or 225/55/15 is what you should consider.
The tiny bit of added tire width probably will not be noticable at all. What made the most difference in my 280ZX was the shocks, struts, and sway bar upgrades. You probably already have that covered.
205/60/15 or 225/55/15 is what you should consider.
The tiny bit of added tire width probably will not be noticable at all. What made the most difference in my 280ZX was the shocks, struts, and sway bar upgrades. You probably already have that covered.
#7
Originally Posted by Bleach
I agree. Stick to factory tire size.
205/60/15 or 225/55/15 is what you should consider.
The tiny bit of added tire width probably will not be noticable at all. What made the most difference in my 280ZX was the shocks, struts, and sway bar upgrades. You probably already have that covered.
205/60/15 or 225/55/15 is what you should consider.
The tiny bit of added tire width probably will not be noticable at all. What made the most difference in my 280ZX was the shocks, struts, and sway bar upgrades. You probably already have that covered.
#9
Originally Posted by NismoPick
225/55 in Sumitomo is what I have on the rear. It is a more rare size, but if you call a local tire store I'm sure they can find a set for you.
Oh lord, I just realized what forum this thread is posted in. ^^;; I guess I clicked on the wrong one and was just too excited to post!
Last edited by Heat Rave R; 09-08-2007 at 12:22 AM.
#10
One tire size is unlikely to make any noticeable difference in your cars handling "in the real world", but it will affect your gas mileage.
Tire compound is much more important.
But, I don't put anything smaller than 225/50/15's on my car anymore...
Tire compound is much more important.
But, I don't put anything smaller than 225/50/15's on my car anymore...
Last edited by lww; 09-08-2007 at 03:41 PM.
#11
Originally Posted by lww
One tire size is unlikely to make any noticeable difference in your cars handling "in the real world", but it will affect your gas mileage.
#12
Originally Posted by Heat Rave R
So between a 215/60-15 and a 205/60-15 tire of the same type, which do you guys think would handle better? The 215 is slightly wider, which should be slightly more traction. But at the same time, the 215 has a slightly taller sidewall, which should mean more sidewall flexing. So do you guys think the slight width advantage cancels out the slight sidewall flex disadvantage?
I am not a fan of departing from factory tires sizes other than going one or two sizes wider. Going to larger wheels with lower profile sidewalls results in a harsher ride, AND since you have more unsprung weight in the heavier tires and wheels it adds to the braking load and can negatively affect acceleration. Rim or sidwall damage from potholes also can be an important factor. There's also the issue of speedometer accuracy, and I LIKE having my speedo as accurate as possible.
For those reasons, I've never been fond of major departures from stock wheel and tire sizes. I suppose that if I were really motivated, I might go up to a 16" wheel and a 50-series profile, but IMO anything beyond that would be dangerous to the rims if you encounter potholes, and would ride like a brick.
Back to the question - if anything, dropping back from 215 to 205 tires improved the ride, and I seem to have gained one or two MPG in highway driving. There is no apparent difference in handling or traction that isn't attributable to the difference between the previous and current tire designs. But I haven't autocrossed the car since installing the Michelins, so I lack data.
So in terms of handling - just suit yourself. Having a bit more rubber on the road while maintaining the system close to stock is not a bad thing in my opinion.
#17
Originally Posted by Pilgrim
I am not a fan of departing from factory tires sizes other than going one or two sizes wider. Going to larger wheels with lower profile sidewalls results in a harsher ride, AND since you have more unsprung weight in the heavier tires and wheels it adds to the braking load and can negatively affect acceleration. Rim or sidwall damage from potholes also can be an important factor. There's also the issue of speedometer accuracy, and I LIKE having my speedo as accurate as possible.
The 18's on my car have nearly and identical final rolling radius as the stock 14" wheel/tire combo. The effect on the speedometer is negligable at worst and the weight increase is marginal and more than made up for by the upgraded brake material and suspension components that were installed prior to changing wheel size.
To each their own, but if you're going to argue against something... Be a little more factually correct.
Rod.
P.S.
"Going 1 or 2 sizes wider" as you mentioned being one of your acceptable practices is almost always going to result in a taller or shorer tire (depending on aspect ratio)... Which will lead to more speedometer inaccuracy.
In fact, it's much easier to increase tire width and wheel diameter together and maintain a similar overall diameter than it is to find a wider tire of the same wheel fitment that isn't also either significantly taller or shorter overall.
Last edited by RodMoyes; 09-21-2007 at 10:11 AM.
#19
harsher ride is also simular to a more firm and stable ride.
The ST springs and 225/40/18 tires on the 280ZX I had did firm up the ride a lot. It was an improvement over the handling it used to have. Even so, its soft compared to my 350Z's ride... but I like it firm
The ST springs and 225/40/18 tires on the 280ZX I had did firm up the ride a lot. It was an improvement over the handling it used to have. Even so, its soft compared to my 350Z's ride... but I like it firm
#20
so do u think that a 215-55-14 that i have thanks to $330 and pepboys with illuminas all the way around, eibach springs and frontand rear sways with a front strut tower bar is a good set-up? cause i have the tires on the 6spokes without the suspension and i just got it and im thinkin its gonna be totally different once i change the suspension out i mean the tires alone changed alot from a 205-70-14
#21
Originally Posted by sticky280zx
so do u think that a 215-55-14 that i have thanks to $330 and pepboys with illuminas all the way around, eibach springs and frontand rear sways with a front strut tower bar is a good set-up? cause i have the tires on the 6spokes without the suspension and i just got it and im thinkin its gonna be totally different once i change the suspension out i mean the tires alone changed alot from a 205-70-14
What brand and model tires did you get?
Last edited by lww; 09-22-2007 at 11:05 PM.
#22
i dont know what brand as im in virginia at work and theryre in dallas...but theyre a knock off brand of cooper (is what the guy at pep-boys said) so whatever that brand is but ive noticed a huge difference between them and the 205-70-14s that were i swear 4 different brands that i had before and still better than the same size goodyears my dad has on his z, but im stoked to get it lowered and swayed im told it will completely change the handling of the car and im wayyyyy exited to have a barely used set of illuminas ALL the way around for it too like cmas early
#25
well looks like im sure u have a better preference?? 215-55-14 i called around and could only find about 3 types, being as theres really only 4 or 5 companies which all tires come from and i needed them that day and the others id have to order....i guess ud rather have goodyears? but seriously ive put it at 4-5k and dropped it and get a tiny chirp and im off so no complaints just would love to hear ur knowledge