Biggest wheel size
Thread Starter
Registered!!
Joined: Oct 2018
Posts: 5
Likes: 0
Rep Power: 0 
Biggest wheel size
I was thinking instead of lowering my car to get rid of the wheel gap, get some bigger rims(18”) instead of the stock 17” and bigger tires not sure what size would go with a bigger rim i want wider tires rather than how thick they are. Would i have any problems going bigger than stock? like less turning radius or rubbing on the inside. Or should i go lower?
Joined: Aug 2003
Posts: 21,620
Likes: 1,252
From: Las Vegas, NV
Rep Power: 513 
Re: Biggest wheel size
The 10thgen Sport/Sport Touring/Si trims come with stock 18's (235/40-18 tires), so that's probably your best bet as to what size tires to get, if you're considering 18s. The only way to properly get rid of the wheel gap would be to lower the car, truth be told. You don't want to increase your tire profile for the sake of aesthetics, since it'll mess with other things. If you lower your car, factor in the cost of camber kits and "specialty" alignments. Lots of general alignment places I've dealt with won't touch a lowered car. A camber kit will make it so you don't have to buy tires ever 20k miles due to uneven tire wear. Furthermore, don't cheap out on suspension. Sure, you can shop frugally by finding good deals, but stick to known good brands/components and/or heavily tested and proven components. Last thing you want is catastrophic failure for something that connects your chassis to your wheels. and keeps it off the ground.
When upgrading your rim size, you want to keep the overall diameter as close to stock as possible, as to not mess with your speedometer/odometer.
if you know how to read tire sizes and know what the numbers mean, by all means, skip this part
When upgrading your rim size, you want to keep the overall diameter as close to stock as possible, as to not mess with your speedometer/odometer.
if you know how to read tire sizes and know what the numbers mean, by all means, skip this part
WIth your stock 215/50-17s, your sidewall height is 107.5mm (~4.23"), since the second number, 50, represents your sidewall height as a percentage of the treadwidth (215mm). In a perfect world, you rim being exactly 17" in diameter, and your sidewalls truly being 4.23", your overall tire diameter would be 25.46".
Upgrade to 235/40-18s, sidewall height drops down to 94mm (~3.7"), giving you an overall tire diameter of 25.4". Sure, you lose 0.6" (1.5mm), but that's not nearly enough to mess with your speedometer/odometer (you lose about .2" tire circumference). Your car will be travelling about .2% slower than indicated (i.e. If your speedometer reads 60MPH, you'll actually be travelling 59.9MPH)
Hell, if you wanted to, Honda offers 19" for their HFP package, and they wrap them in 235/35-19s. Those will give you an 82.25mm (~3.24") sidewall height, overall tire diameter of 25.48". Extra ~.01" overall diameter over your stock tires, which ends up in an extra .04" increase in circumference. The wheel calculator I've been using for speedometer difference (I've been using a calculator for the other numbers) says its close enough to the same overall diameter to have no effect on speedometer reading (0% difference).
TL;DRUpgrade to 235/40-18s, sidewall height drops down to 94mm (~3.7"), giving you an overall tire diameter of 25.4". Sure, you lose 0.6" (1.5mm), but that's not nearly enough to mess with your speedometer/odometer (you lose about .2" tire circumference). Your car will be travelling about .2% slower than indicated (i.e. If your speedometer reads 60MPH, you'll actually be travelling 59.9MPH)
Hell, if you wanted to, Honda offers 19" for their HFP package, and they wrap them in 235/35-19s. Those will give you an 82.25mm (~3.24") sidewall height, overall tire diameter of 25.48". Extra ~.01" overall diameter over your stock tires, which ends up in an extra .04" increase in circumference. The wheel calculator I've been using for speedometer difference (I've been using a calculator for the other numbers) says its close enough to the same overall diameter to have no effect on speedometer reading (0% difference).
- 18's will fit, get 235/40-18s
- 19's will fit, too. 235/35-19 is the tire size you wanna get
- I haven't looked into it yet, but find out what offset range works with the 10thgen. That'll affect whether or not you'll have any rubbing issues, fender clearance issues, etc. It'll also affect whether or not the brakes will fit inside the rim.
- 20's may fit, too, if you're interested in going that big. The CTR rocks 20s, but then again, the CTR also has flared fenders. Choose that route at your own risk.
Thread Starter
Registered!!
Joined: Oct 2018
Posts: 5
Likes: 0
Rep Power: 0 Re: Biggest wheel size
The 10thgen Sport/Sport Touring/Si trims come with stock 18's (235/40-18 tires), so that's probably your best bet as to what size tires to get, if you're considering 18s. The only way to properly get rid of the wheel gap would be to lower the car, truth be told. You don't want to increase your tire profile for the sake of aesthetics, since it'll mess with other things. If you lower your car, factor in the cost of camber kits and "specialty" alignments. Lots of general alignment places I've dealt with won't touch a lowered car. A camber kit will make it so you don't have to buy tires ever 20k miles due to uneven tire wear. Furthermore, don't cheap out on suspension. Sure, you can shop frugally by finding good deals, but stick to known good brands/components and/or heavily tested and proven components. Last thing you want is catastrophic failure for something that connects your chassis to your wheels. and keeps it off the ground.
When upgrading your rim size, you want to keep the overall diameter as close to stock as possible, as to not mess with your speedometer/odometer.
if you know how to read tire sizes and know what the numbers mean, by all means, skip this part
When upgrading your rim size, you want to keep the overall diameter as close to stock as possible, as to not mess with your speedometer/odometer.
if you know how to read tire sizes and know what the numbers mean, by all means, skip this part
WIth your stock 215/50-17s, your sidewall height is 107.5mm (~4.23"), since the second number, 50, represents your sidewall height as a percentage of the treadwidth (215mm). In a perfect world, you rim being exactly 17" in diameter, and your sidewalls truly being 4.23", your overall tire diameter would be 25.46".
Upgrade to 235/40-18s, sidewall height drops down to 94mm (~3.7"), giving you an overall tire diameter of 25.4". Sure, you lose 0.6" (1.5mm), but that's not nearly enough to mess with your speedometer/odometer (you lose about .2" tire circumference). Your car will be travelling about .2% slower than indicated (i.e. If your speedometer reads 60MPH, you'll actually be travelling 59.9MPH)
Hell, if you wanted to, Honda offers 19" for their HFP package, and they wrap them in 235/35-19s. Those will give you an 82.25mm (~3.24") sidewall height, overall tire diameter of 25.48". Extra ~.01" overall diameter over your stock tires, which ends up in an extra .04" increase in circumference. The wheel calculator I've been using for speedometer difference (I've been using a calculator for the other numbers) says its close enough to the same overall diameter to have no effect on speedometer reading (0% difference).
TL;DRUpgrade to 235/40-18s, sidewall height drops down to 94mm (~3.7"), giving you an overall tire diameter of 25.4". Sure, you lose 0.6" (1.5mm), but that's not nearly enough to mess with your speedometer/odometer (you lose about .2" tire circumference). Your car will be travelling about .2% slower than indicated (i.e. If your speedometer reads 60MPH, you'll actually be travelling 59.9MPH)
Hell, if you wanted to, Honda offers 19" for their HFP package, and they wrap them in 235/35-19s. Those will give you an 82.25mm (~3.24") sidewall height, overall tire diameter of 25.48". Extra ~.01" overall diameter over your stock tires, which ends up in an extra .04" increase in circumference. The wheel calculator I've been using for speedometer difference (I've been using a calculator for the other numbers) says its close enough to the same overall diameter to have no effect on speedometer reading (0% difference).
- 18's will fit, get 235/40-18s
- 19's will fit, too. 235/35-19 is the tire size you wanna get
- I haven't looked into it yet, but find out what offset range works with the 10thgen. That'll affect whether or not you'll have any rubbing issues, fender clearance issues, etc. It'll also affect whether or not the brakes will fit inside the rim.
- 20's may fit, too, if you're interested in going that big. The CTR rocks 20s, but then again, the CTR also has flared fenders. Choose that route at your own risk.
Joined: Aug 2003
Posts: 21,620
Likes: 1,252
From: Las Vegas, NV
Rep Power: 513 Re: Biggest wheel size
CTR 20's also have a different bolt pattern. We have 5x114.3 bolt pattern, CTR has 5x120
Tein has a set of coilovers for our car, heard nothing but good things about em. The Si springs are a direct drop in, only cost like $120 shipped for the set, slightly stiffer spring rate, and lowers very modestly (1cm). From what Vincent from 27WON (independent manufacturer, does a lot of r&d on his own 18 sport hatch, and makes some very nice stuff), he feels like thats what Honda should've put on the Sport trim from the get-go
Tein has a set of coilovers for our car, heard nothing but good things about em. The Si springs are a direct drop in, only cost like $120 shipped for the set, slightly stiffer spring rate, and lowers very modestly (1cm). From what Vincent from 27WON (independent manufacturer, does a lot of r&d on his own 18 sport hatch, and makes some very nice stuff), he feels like thats what Honda should've put on the Sport trim from the get-go
Joined: Aug 2003
Posts: 21,620
Likes: 1,252
From: Las Vegas, NV
Rep Power: 513 Re: Biggest wheel size
Sport, sport touring and Si trims all come stock with 18s. Wrap em in 235/40-18s and you'll be fine
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
