Need tires: Recommendations
#61
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In my experience the V12 EVOs are a GREAT tire: Didnt keep any cars very long but plan to hold on to the V for a while.
'05 GTO (Heavy Suspension Mods/ Power) - 20,000 miles and very pleased with the ride and grip.
'01 BMW 540 (Daily) - V12s for 10,000 miles and not a complaint.
'04 Mini S (Daily/ AutoX) - V12s for 6,000 with great success on AutoX
'05 V (Daily) - 3,000 Miles and very pleased. Heavy car does well with the tires.
'05 GTO (Heavy Suspension Mods/ Power) - 20,000 miles and very pleased with the ride and grip.
'01 BMW 540 (Daily) - V12s for 10,000 miles and not a complaint.
'04 Mini S (Daily/ AutoX) - V12s for 6,000 with great success on AutoX
'05 V (Daily) - 3,000 Miles and very pleased. Heavy car does well with the tires.
#62
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255/40/18 all the way around is 2.4% too fast per tire tool. That's no big deal, right? It's when it's a difference between front to rear?
Or is it just it has to be less x% than from stock?
I need to order ASAP.
Or is it just it has to be less x% than from stock?
I need to order ASAP.
#63
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You can always adjust your ecm for tire/wheel size using EFI live, or HP tuners, as long as the rear wheels have the right tire/wheel size in the ecm your speedo will show correct.
#64
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I put on a set of Conti DWs, stock size, 2 weeks ago. Much more grip on wet or dry pavement than the stock GY RS runflats (28K miles out of them).
Mike
NC
-2007 CTS-V, 100% stock. 28K miles
-2000 Vette convertible, Original Owner, 39K
-2006 Tacoma, 50K
Mike
NC
-2007 CTS-V, 100% stock. 28K miles
-2000 Vette convertible, Original Owner, 39K
-2006 Tacoma, 50K
#65
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Welp, I'm definitely going with 275/40/18, and 245/45/18 for the front.
I do want to lower the car with H&R and MM spacers in the near future.
Looking for recommendations.
I drive the car 25k a year, and have H/C 432 HP.
I drive in the rain, (not really the snow)
I drive the car pretty spirited, and it will not be just a leisurely driven car.
I was looking at the Continental Contisports
Any other recommendations?
I do want to lower the car with H&R and MM spacers in the near future.
Looking for recommendations.
I drive the car 25k a year, and have H/C 432 HP.
I drive in the rain, (not really the snow)
I drive the car pretty spirited, and it will not be just a leisurely driven car.
I was looking at the Continental Contisports
Any other recommendations?
Personally, I don't understand the want for 275 rears when you cant increase the fronts to match. ...since you're adding more rear grip that means you're increasing understeer. Maybe that doesn't matter to you, but it does to me when I use summers as a track (road course, not the strip) setup.
You mention 25k miles a year, so I assume wear mileage is a concern.
Unfortunately, it sounds like you'll need to compromise something. Or, do what I do... 3 sets of wheels and tires. ...Blizzaks now (Nov-April), various summers that I justify spending more $ on because they only see ~6 months use on the street and occasionally track, Nitto NT01 track if dry and want more grip than current summers.
You have to pay to play, or compromise something.
#67
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It is about where your torque, speed, etc are compared to the stock set of parameters.
Generally, The taller the tire, the less performance you are going to get out of the car as it makes the car feel like it has lower numerical gears. Same is true for much shorter tires; theoretically gives you greater performance under certain conditions, but could lower your top end speed.
In actuality, 3% is nothing and just a parameter that one tire size calculator has set. I am not sure what they are basing that value on, being good/bad, but it is their parameter.
Hell, it could be just that that person programming the calculator did not want their speedometer to be off more than 3%. I don't have that answer.
Case in point:
3% of a 27" tall tire = .81" or basically 13/16"
3% of a 40" tall tire = 1.2" or basically 1 1/4"
#68
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People main concern is different tire diameters front and rear can affect the stability control system because they will have different effective rotational speeds (RPMs). I have not had a issue running 245/45 up front and 275/45 in the rear (speeds up to 130mph on the track) but others have had different experiences
#69
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People main concern is different tire diameters front and rear can affect the stability control system because they will have different effective rotational speeds (RPMs). I have not had a issue running 245/45 up front and 275/45 in the rear (speeds up to 130mph on the track) but others have had different experiences
This is what I remember, but I couldn't when I asked. As long as front/back have roughly the same height (rotational speeds being nearly the same), it won't throw the stability errors. But being all together different heights from stock is irrelevant (sans speedo correctness), so long as they're close in height to each other, front to rear.