Can 185 Tires Be Replaced with 195?
3 Answers
185 tires can be replaced with 195, as long as the increase in tire width is within an appropriate range. However, it is important to note that after increasing the tire width, the overall tire diameter should remain as close as possible to the original specifications. For example, if you want to change a 185/60/15 tire to a 195 width, you can replace it with a 195/55/15. Here are the relevant details: Adjusting the wheel rim: While increasing the tire width, the aspect ratio is reduced to maintain the same overall diameter as the original specifications. The above solution does not require changing the wheel rim. Of course, some tire specifications may not have matching width and aspect ratio combinations, in which case the wheel rim size needs to be adjusted. For example, if you want to change a 185/60/15 tire to a 195 width, you can also opt for a 195/50/16 specification, which has a similar overall diameter to the original, but requires changing the 15-inch rim to a 16-inch one. Prerequisite: The condition for using 195 and 185 tires interchangeably is that the rim size must be suitable. If the rim is labeled as 5.5J or 6.0J (rim width), then 195 and 185 tires can be used interchangeably. However, if the J value is larger or smaller, this solution may not be feasible because each rim width has an applicable range of tire widths.
I've researched this extensively. Upgrading from 185 to 195 tires is completely feasible, but the key factor is wheel rim compatibility. My car originally came with 185 tires, and after switching to 195, the most noticeable improvement was enhanced grip – especially when cornering in wet conditions, which feels much more secure. However, fuel consumption does increase slightly, by about 0.5 liters per 100 kilometers. Another thing to note is that steering becomes slightly heavier, particularly noticeable during low-speed parking maneuvers. I recommend checking your wheel rim's J value; generally, factory 5.5J rims can accommodate 195 tires without issues. Don't cheap out with no-name tires – when I upgraded to Michelins, the difference in comfort over speed bumps was immediately apparent. Also, be aware that annual inspections might depend on local regulations, though mine passed without problems. Overall, the safety improvements make it worthwhile, but factory tires are perfectly adequate for daily commuting if you're not pushing the limits.
I've experimented with tire sizing a few times. Upgrading from 185 to 195 is common but requires attention to several points. First, check the rim width - factory rims below 5J can't accommodate 195 tires. Second, keep the new tire diameter change within 3%, otherwise the speedometer will be inaccurate. In practical terms, 195 tires have about 5% more contact patch, slightly improving braking distance but making acceleration feel sluggish. After six months of use, my main complaint is slightly more noticeable road noise. Price differences are significant too - same brand 195 tires cost about 10% more than 185. I recommend keeping the original tires for potential inspection needs. If purely for aesthetics, changing rim styles is more cost-effective than tire upgrades.
