Correct me if I am wrong....
Correct me if I am wrong.... I am trying to figure a few things out. Right now I have a 17" wheel with a 40 series tire, if I go to an 18" wheel with a 40 series tire I will increse my ride height by 1/2". If I go with an 18" wheel and a 35 series tire my ride height will stay the same as it is now with the 17" wheel and 40 series tire.
Am I thinking about this correctly? I know ride height isn't the way to measure, I am just using it as a base to start from, thats how my febel mind works sometimes lol.
Thanks
Am I thinking about this correctly? I know ride height isn't the way to measure, I am just using it as a base to start from, thats how my febel mind works sometimes lol.
Thanks
8 sec potential, 12 sec slip
iTrader: (50)
Joined: Apr 2002
Posts: 4,092
Likes: 2
From: Savannah, GA
The series # is a percentage of the width of the tire. So you can't really say that straight across the board that a 35 series will be equivalent to a 40 series on a 1" smaller diameter wheel..
For example, a 275/40/17 total height is 25.661" (275 x .40 = a sidewall of 110mm or 4.33", so top sidewall of 4.33" + 17" wheel diameter + 4.33" bottom sidewall)
A 275/35/18 is 25.579" so, at that width, that holds true.
However, a 315/40/17 is 26.921 vs a 315/35/18 is 26.681, so as you can see, the wider the tire, the more the difference is gonna be.
For example, a 275/40/17 total height is 25.661" (275 x .40 = a sidewall of 110mm or 4.33", so top sidewall of 4.33" + 17" wheel diameter + 4.33" bottom sidewall)
A 275/35/18 is 25.579" so, at that width, that holds true.
However, a 315/40/17 is 26.921 vs a 315/35/18 is 26.681, so as you can see, the wider the tire, the more the difference is gonna be.
The series # is a percentage of the width of the tire. So you can't really say that straight across the board that a 35 series will be equivalent to a 40 series on a 1" smaller diameter wheel..
For example, a 275/40/17 total height is 25.661" (275 x .40 = a sidewall of 110mm or 4.33", so top sidewall of 4.33" + 17" wheel diameter + 4.33" bottom sidewall)
A 275/35/18 is 25.579" so, at that width, that holds true.
However, a 315/40/17 is 26.921 vs a 315/35/18 is 26.681, so as you can see, the wider the tire, the more the difference is gonna be.
For example, a 275/40/17 total height is 25.661" (275 x .40 = a sidewall of 110mm or 4.33", so top sidewall of 4.33" + 17" wheel diameter + 4.33" bottom sidewall)
A 275/35/18 is 25.579" so, at that width, that holds true.
However, a 315/40/17 is 26.921 vs a 315/35/18 is 26.681, so as you can see, the wider the tire, the more the difference is gonna be.
. Also, are you going to the midnights this weekend?!
However, a 315/35/17 (which would be 25.68" tall over all) is the right tire for a 17x11ish wheel for our cars, only a few people make a 315/35/18 (MT being one and it would be 25.44" tall) so most go with a 305/30/18, which is 25.2" tall .
Also, are you going to the midnights this weekend?!
. Also, are you going to the midnights this weekend?!
Overall Height 315/35/18 = 26.68
Last edited by JeaneZ28; Sep 17, 2009 at 03:43 PM.
I am trying to figure a few things out. Right now I have a 17" wheel with a 40 series tire, if I go to an 18" wheel with a 40 series tire I will increse my ride height by 1/2". If I go with an 18" wheel and a 35 series tire my ride height will stay the same as it is now with the 17" wheel and 40 series tire.
Am I thinking about this correctly? I know ride height isn't the way to measure, I am just using it as a base to start from, thats how my febel mind works sometimes lol.
Thanks
Am I thinking about this correctly? I know ride height isn't the way to measure, I am just using it as a base to start from, thats how my febel mind works sometimes lol.
Thanks
Thanks guys, I didn't know all that 
This is so confusing.... I can tear down & rebuild the motor but I can't pick a set of tires. 
Will I be ok with a falken 275/40/18 on the rear? Car is lowered with hotchkis springs.
This is so confusing.... I can tear down & rebuild the motor but I can't pick a set of tires. Will I be ok with a falken 275/40/18 on the rear? Car is lowered with hotchkis springs. Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo 8 sec potential, 12 sec slip
iTrader: (50)
Joined: Apr 2002
Posts: 4,092
Likes: 2
From: Savannah, GA
However, a 315/35/17 (which would be 25.68" tall over all) is the right tire for a 17x11ish wheel for our cars, only a few people make a 315/35/18 (MT being one and it would be 25.44" tall) so most go with a 305/30/18, which is 25.2" tall .
Also, are you going to the midnights this weekend?!
. Also, are you going to the midnights this weekend?!
I was just using arbitrary numbers as examples I dunno if I'm goin to the midnights or not man. Tyra isnt running right now. Well, she is, but I'm sure her clutch is covered in oil from that leak I had, so I'm not drivin it right now... Are you going? If so, I may come out just to watch you run so perhaps I can do a little bit of vicarious racing 
I was just using arbitrary numbers as examples I dunno if I'm goin to the midnights or not man. Tyra isnt running right now. Well, she is, but I'm sure her clutch is covered in oil from that leak I had, so I'm not drivin it right now... Are you going? If so, I may come out just to watch you run so perhaps I can do a little bit of vicarious racing 
